7+3x=5x+13

Question

This topic is about equality and numbers to solve each equation.

Answer 1

7+3x=5x+13

Subtract 3x from both sides of the equation: 7 + 3x - 3x = 5x + 13 - 3x

7 = 2x + 13

Subtract 13 from both sides of the equation: 7 - 13 = 2x + 13 - 13

-6 = 2x

Divide both sides of the equation by 2: -6 / 2 = 2x / 2

-3 = x, or more conventionally, x = -3

Put that value back into the original equation to verify:

7+3x=5x+13

7 + (3 * -3) = (5 * -3) + 13

7 - 9 = -15 + 13

-2 = -2