-78=3(9-7x)

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Solution for -78=3(9-7x) equation:


Simplifying
-78 = 3(9 + -7x)
-78 = (9 * 3 + -7x * 3)
-78 = (27 + -21x)

Solving
-78 = 27 + -21x

Solving for variable 'x'.

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

Add '21x' to each side of the equation.
-78 + 21x = 27 + -21x + 21x

Combine like terms: -21x + 21x = 0
-78 + 21x = 27 + 0
-78 + 21x = 27

Add '78' to each side of the equation.
-78 + 78 + 21x = 27 + 78

Combine like terms: -78 + 78 = 0
0 + 21x = 27 + 78
21x = 27 + 78

Combine like terms: 27 + 78 = 105
21x = 105

Divide each side by '21'.
x = 5

Simplifying
x = 5

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