7x-3(4x+5)=40

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Solution for 7x-3(4x+5)=40 equation:


Simplifying
7x + -3(4x + 5) = 40

Reorder the terms:
7x + -3(5 + 4x) = 40
7x + (5 * -3 + 4x * -3) = 40
7x + (-15 + -12x) = 40

Reorder the terms:
-15 + 7x + -12x = 40

Combine like terms: 7x + -12x = -5x
-15 + -5x = 40

Solving
-15 + -5x = 40

Solving for variable 'x'.

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

Add '15' to each side of the equation.
-15 + 15 + -5x = 40 + 15

Combine like terms: -15 + 15 = 0
0 + -5x = 40 + 15
-5x = 40 + 15

Combine like terms: 40 + 15 = 55
-5x = 55

Divide each side by '-5'.
x = -11

Simplifying
x = -11

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