-7=-1(3+9x)+4x

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Solution for -7=-1(3+9x)+4x equation:


Simplifying
-7 = -1(3 + 9x) + 4x
-7 = (3 * -1 + 9x * -1) + 4x
-7 = (-3 + -9x) + 4x

Combine like terms: -9x + 4x = -5x
-7 = -3 + -5x

Solving
-7 = -3 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
-7 + 5x = -3 + -5x + 5x

Combine like terms: -5x + 5x = 0
-7 + 5x = -3 + 0
-7 + 5x = -3

Add '7' to each side of the equation.
-7 + 7 + 5x = -3 + 7

Combine like terms: -7 + 7 = 0
0 + 5x = -3 + 7
5x = -3 + 7

Combine like terms: -3 + 7 = 4
5x = 4

Divide each side by '5'.
x = 0.8

Simplifying
x = 0.8

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