180=7x-3(-6+15) please

x=9

Step-by-step explanation:

Simplifying

180 = 7x + -3(-6x + 15)

Reorder the terms:

180 = 7x + -3(15 + -6x)

180 = 7x + (15 * -3 + -6x * -3)

180 = 7x + (-45 + 18x)

Reorder the terms:

180 = -45 + 7x + 18x

Combine like terms: 7x + 18x = 25x

180 = -45 + 25x

Solving

180 = -45 + 25x

Solving for variable 'x'.

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

Add '-25x' to each side of the equation.

180 + -25x = -45 + 25x + -25x

Combine like terms: 25x + -25x = 0

180 + -25x = -45 + 0

180 + -25x = -45

Add '-180' to each side of the equation.

180 + -180 + -25x = -45 + -180

Combine like terms: 180 + -180 = 0

0 + -25x = -45 + -180

-25x = -45 + -180

Combine like terms: -45 + -180 = -225

-25x = -225

Divide each side by '-25'.

x = 9

Simplifying

x = 9

step-by-step explanation:

a and d

im not sure what this means: mc011-7.jpg

step-by-step explanation: