77=3.5(9+x)

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Solution for 77=3.5(9+x) equation:


Simplifying
77 = 3.5(9 + x)
77 = (9 * 3.5 + x * 3.5)
77 = (31.5 + 3.5x)

Solving
77 = 31.5 + 3.5x

Solving for variable 'x'.

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

Add '-3.5x' to each side of the equation.
77 + -3.5x = 31.5 + 3.5x + -3.5x

Combine like terms: 3.5x + -3.5x = 0.0
77 + -3.5x = 31.5 + 0.0
77 + -3.5x = 31.5

Add '-77' to each side of the equation.
77 + -77 + -3.5x = 31.5 + -77

Combine like terms: 77 + -77 = 0
0 + -3.5x = 31.5 + -77
-3.5x = 31.5 + -77

Combine like terms: 31.5 + -77 = -45.5
-3.5x = -45.5

Divide each side by '-3.5'.
x = 13

Simplifying
x = 13

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