(x+10)+8(x+2.5)=120

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Solution for (x+10)+8(x+2.5)=120 equation:


Simplifying
(x + 10) + 8(x + 2.5) = 120

Reorder the terms:
(10 + x) + 8(x + 2.5) = 120

Remove parenthesis around (10 + x)
10 + x + 8(x + 2.5) = 120

Reorder the terms:
10 + x + 8(2.5 + x) = 120
10 + x + (2.5 * 8 + x * 8) = 120
10 + x + (20 + 8x) = 120

Reorder the terms:
10 + 20 + x + 8x = 120

Combine like terms: 10 + 20 = 30
30 + x + 8x = 120

Combine like terms: x + 8x = 9x
30 + 9x = 120

Solving
30 + 9x = 120

Solving for variable 'x'.

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

Add '-30' to each side of the equation.
30 + -30 + 9x = 120 + -30

Combine like terms: 30 + -30 = 0
0 + 9x = 120 + -30
9x = 120 + -30

Combine like terms: 120 + -30 = 90
9x = 90

Divide each side by '9'.
x = 10

Simplifying
x = 10

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