120*.7=21+x

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Solution for 120*.7=21+x equation:


Simplifying
120 * 0.7 = 21 + x

Multiply 120 * 0.7
84 = 21 + x

Solving
84 = 21 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
84 + -1x = 21 + x + -1x

Combine like terms: x + -1x = 0
84 + -1x = 21 + 0
84 + -1x = 21

Add '-84' to each side of the equation.
84 + -84 + -1x = 21 + -84

Combine like terms: 84 + -84 = 0
0 + -1x = 21 + -84
-1x = 21 + -84

Combine like terms: 21 + -84 = -63
-1x = -63

Divide each side by '-1'.
x = 63

Simplifying
x = 63

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