Math Rules, if no parenthesis?

Question

4 + 2 x 5 - 3 + 1 / 2 = ?
if you don't have parenthesis what are the rules.

Answer 1

PEMDAS
Order of operations is parenthesis (everything inside them in this same order starting at the innermost brackets if there are brackets within brackets), exponents, multiplication, division, addition, subtraction.

Answer 2

Do powers (i.e. exponents) first, then multiply and divides, finally add and subtract from left to right.

4 + 2 x 5 - 3 + 1 / 2 =
4 + 10 - 3 + .5 =
14 - 3 + .5 =
11 + .5 = 11.5

Answer 3

Parentheses Rules Math

Answer 4

14

Answer 5

Order of Operations

When an expression contains more than one operation, you can get different answers depending on the order in which you solve the expression. Mathematicians have agreed on a certain order for evaluating expressions, so we all arrive at the same answers. We often use grouping symbols, like parentheses, to help us organize complicated expressions into simpler ones. Here's the order we use:

First, do all operations that lie inside parentheses.
Next, do any work with exponents or roots.
Working from left to right, do all multiplication and division.
Finally, working from left to right, do all addition and subtraction.

Answer 6

B E D M A S
Brackets(parenthesis)
Exponents
Division
Multiplication
Addition
Subtraction

multiplication and division are interchangeable
so are addition and subtraction
that means that it doesn't matter which order you do those in

4 + 10 - 3 + 0.5
14 - 3 + 0.5
11.5

Answer 7

4 + 2 x 5 - 3 + 1 / 2 = ?
sequential order:
The multiplication and division, first.
4 + 10 - 3 + 0,5 =
14 - 3 + 0,5
11 + 0,5 = 11,5
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Answer 8

The rules are : multiplication and division join.Sum and substraction separate
= 4 +10 -3+0.5 =11.5 you must perform first 2x5 :They are joint.

The same 1/2.

Answer 9

i do no longer think of your question is extremely approximately math. Take an analogous argument you're making and prepare it to grammar. the "expression", right here a word, could desire to persist with the regulations of grammar to make experience. If I took words (like numbers) and positioned them so as in accordance to distinctive regulations, including alphabetical, an analogous word could be completely distinctive. the regulations which you're arguing against seem greater like regulations of coherence. The underlying mathematical ideas do no longer substitute and are not arbitrary. think of you're including 3 to 4, and then multiplying by utilising 2. basically: 3+4=7 7*2=14 the regulations you're having hardship with are the regulations that permit us to prepare grammar to math... (3+4)*2=14 What you assert is that, if I used distinctive regulations, i could desire to declare... 3+4*2=11 yet this variation impacts the regulations of "math grammar", rather than the underlying ideas of math. So, in end, the regulations you mean are thoroughly arbitrary, yet those regulations are greater involved in coherence than mathematical ideas. wish that facilitates.

Answer 10

this sum is done from bodmas
b-brackets
o-of
d-division
m-muti
a-add
s-sub
4+2 x 5 - 3+ 1/2=
.: 4+10-3+1\2=
.:14+1\2-3=
.:29\2-3=
.:23/2