70=77-x

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Solution for 70=77-x equation:


Simplifying
70 = 77 + -1x

Solving
70 = 77 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
70 + x = 77 + -1x + x

Combine like terms: -1x + x = 0
70 + x = 77 + 0
70 + x = 77

Add '-70' to each side of the equation.
70 + -70 + x = 77 + -70

Combine like terms: 70 + -70 = 0
0 + x = 77 + -70
x = 77 + -70

Combine like terms: 77 + -70 = 7
x = 7

Simplifying
x = 7

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