10=7-x+8-x

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Solution for 10=7-x+8-x equation:


Simplifying
10 = 7 + -1x + 8 + -1x

Reorder the terms:
10 = 7 + 8 + -1x + -1x

Combine like terms: 7 + 8 = 15
10 = 15 + -1x + -1x

Combine like terms: -1x + -1x = -2x
10 = 15 + -2x

Solving
10 = 15 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
10 + 2x = 15 + -2x + 2x

Combine like terms: -2x + 2x = 0
10 + 2x = 15 + 0
10 + 2x = 15

Add '-10' to each side of the equation.
10 + -10 + 2x = 15 + -10

Combine like terms: 10 + -10 = 0
0 + 2x = 15 + -10
2x = 15 + -10

Combine like terms: 15 + -10 = 5
2x = 5

Divide each side by '2'.
x = 2.5

Simplifying
x = 2.5

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