5(-3x+7)-4(5-2x)=78

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Solution for 5(-3x+7)-4(5-2x)=78 equation:


Simplifying
5(-3x + 7) + -4(5 + -2x) = 78

Reorder the terms:
5(7 + -3x) + -4(5 + -2x) = 78
(7 * 5 + -3x * 5) + -4(5 + -2x) = 78
(35 + -15x) + -4(5 + -2x) = 78
35 + -15x + (5 * -4 + -2x * -4) = 78
35 + -15x + (-20 + 8x) = 78

Reorder the terms:
35 + -20 + -15x + 8x = 78

Combine like terms: 35 + -20 = 15
15 + -15x + 8x = 78

Combine like terms: -15x + 8x = -7x
15 + -7x = 78

Solving
15 + -7x = 78

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 + -7x = 78 + -15

Combine like terms: 15 + -15 = 0
0 + -7x = 78 + -15
-7x = 78 + -15

Combine like terms: 78 + -15 = 63
-7x = 63

Divide each side by '-7'.
x = -9

Simplifying
x = -9

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