Question

Which of the following is a solution of the equation 3x- 7 = 7- 4x​

Answer 1

Answer:

Simplifying

3x + -7 = 7 + -4x

Reorder the terms:

-7 + 3x = 7 + -4x

Solving

-7 + 3x = 7 + -4x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '4x' to each side of the equation.

-7 + 3x + 4x = 7 + -4x + 4x

Combine like terms: 3x + 4x = 7x

-7 + 7x = 7 + -4x + 4x

Combine like terms: -4x + 4x = 0

-7 + 7x = 7 + 0

-7 + 7x = 7

Add '7' to each side of the equation.

-7 + 7 + 7x = 7 + 7

Combine like terms: -7 + 7 = 0

0 + 7x = 7 + 7

7x = 7 + 7

Combine like terms: 7 + 7 = 14

7x = 14

Divide each side by '7'.

x = 2

Simplifying

x = 2