3(-4x+1)+5(x+8)=78

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Solution for 3(-4x+1)+5(x+8)=78 equation:


Simplifying
3(-4x + 1) + 5(x + 8) = 78

Reorder the terms:
3(1 + -4x) + 5(x + 8) = 78
(1 * 3 + -4x * 3) + 5(x + 8) = 78
(3 + -12x) + 5(x + 8) = 78

Reorder the terms:
3 + -12x + 5(8 + x) = 78
3 + -12x + (8 * 5 + x * 5) = 78
3 + -12x + (40 + 5x) = 78

Reorder the terms:
3 + 40 + -12x + 5x = 78

Combine like terms: 3 + 40 = 43
43 + -12x + 5x = 78

Combine like terms: -12x + 5x = -7x
43 + -7x = 78

Solving
43 + -7x = 78

Solving for variable 'x'.

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

Add '-43' to each side of the equation.
43 + -43 + -7x = 78 + -43

Combine like terms: 43 + -43 = 0
0 + -7x = 78 + -43
-7x = 78 + -43

Combine like terms: 78 + -43 = 35
-7x = 35

Divide each side by '-7'.
x = -5

Simplifying
x = -5

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