7(x-3)+8(x+5)=-100

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Solution for 7(x-3)+8(x+5)=-100 equation:


Simplifying
7(x + -3) + 8(x + 5) = -100

Reorder the terms:
7(-3 + x) + 8(x + 5) = -100
(-3 * 7 + x * 7) + 8(x + 5) = -100
(-21 + 7x) + 8(x + 5) = -100

Reorder the terms:
-21 + 7x + 8(5 + x) = -100
-21 + 7x + (5 * 8 + x * 8) = -100
-21 + 7x + (40 + 8x) = -100

Reorder the terms:
-21 + 40 + 7x + 8x = -100

Combine like terms: -21 + 40 = 19
19 + 7x + 8x = -100

Combine like terms: 7x + 8x = 15x
19 + 15x = -100

Solving
19 + 15x = -100

Solving for variable 'x'.

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

Add '-19' to each side of the equation.
19 + -19 + 15x = -100 + -19

Combine like terms: 19 + -19 = 0
0 + 15x = -100 + -19
15x = -100 + -19

Combine like terms: -100 + -19 = -119
15x = -119

Divide each side by '15'.
x = -7.933333333

Simplifying
x = -7.933333333

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