Some math for the math lovers?

Question

Using "c" to represent Chau's age, translate the following sentence into a mathematical expression

Chau's age increased by 15 is 53

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Simplifying the following expression
-t^2-3t^3

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Solving a word problem using linear equation

2 more than 7 times a whole number is 14 more than 3 times that number. Find the number

Answer 1

Problem 1

x + 15 = 53

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Problem 3

7x + 2 = 3x + 14

7x + 2 - 3x = 3x + 14 - 3x

4x + 2 = 14

4x + 2 - 2 = 14 - 2

4x = 12

4x/4 = 12/4

x = 3

The answer is x = 3

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Answer 2

c=chau's original age that is 38.
mathematical expression for the sentence:
c=38+15
=53
let x be the number
2+7x=14+3x
7x-3x=14-2
4x=12
x=12/4
=3
the number is 3.

Answer 3

x+15 = 53 so x=38

you put -t^2 in factor -t^2 (1-3t)


2+7x = 14 +3x

4x = 12

x=3

check replacing x by 3 you found 23 = 23

Answer 4

1.c+15=53

2.-t^2(1+3t)

3.let the numberbe 'x'
7x+2=3x+14
addind -3x-2
4x=12
dividing by 4
x=12/4
=3

Answer 5

2 nd problem

let whole no. be x
then ,
2 + 7x = 14 + 3x
4x = 12
x =3

Answer 6

expensive, I hate the math with all myself, in college I had continually Low Vote, the math for me is yet another language.. this is it particularly is extra handy to income the chinese language, that Math... ...the only uncooked I enjoyed learn is English (I' M Italian), particularly.. in English I had very severe votes ... yet I Hate the math

Answer 7

c+15=53

I hate exponents

7x+2=3x+14
4x+2=14
4x=12
x=3