solve using algebraic method?Steps to solve?

Question

2a-3.3=7a-5.2

.11x+.12(x+4000)=940

Answer 1

7a-2a=5.2-3.3
5a=1.9
a=0.38

0.11x+0.12x+0.12(4000)=940
0.23x+480=940
0.23x=460
x=2000

Answer 2

I solved for 11x+12(x+4000)=940

There is an order of operations in algebraic method.
1. Do what is in parenthesis first.
2. Multiply or divide anything in the equation first.
3. Place like numbers together. For instance, 12x and 11x need to be grouped together.
A. When a number crosses the other side of the equation line, it turns from + to - or - to + .
4. Add and subtract everything.
5. Eliminate x or y and do the brackets.

11x+12(x+4000)=940
11x+12x+48000=940
23x -48000=-48000
23x=47060
----------------
23x 23x

x=2041.8

I feel like I did something wrong. Let me know if I did the problem incorrectly.

Answer 3

1) 2a - 3.3 = 7a - 5.2
2a + 1.9 = 7a
1.9 = 5a
(1.9) / 5 = a
a = .38

2) .11x+.12(x+4000)=940
.11x + .12x + 480 = 940
.23x = 460
x = 460 / 0.23 = 2000

Answer 4

For #1, get the terms with a on one side of the = and the numbers with no a on the other by adding opposites. Add -7a to both sides and add 3.3 to both sides. This gets:

-5a = -1.9

then divide both sides by -5 and you get a

On #2, do out the distributive property

.11x + .12x + .12(4000) = 940

combine the x terms 0.23x + 480 = 940

add -480 to both sides then divide by 0.23 to get x

Answer 5

2a - 3.3 = 7a - 5.2

2a - 3.3 - 2a = 7x - 5.2 - 2a

- 3.3 = 5a - 5.2

- 3.3 + 5.2 = 5a - 5.2 + 5.2

1.9 = 5a

1.9 / 5 = 5a / 5

`1.9 / 5 = a

0.38 = a

- - - - - - -s-