7(-3x+1)=20(x+1)

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Solution for 7(-3x+1)=20(x+1) equation:


Simplifying
7(-3x + 1) = 20(x + 1)

Reorder the terms:
7(1 + -3x) = 20(x + 1)
(1 * 7 + -3x * 7) = 20(x + 1)
(7 + -21x) = 20(x + 1)

Reorder the terms:
7 + -21x = 20(1 + x)
7 + -21x = (1 * 20 + x * 20)
7 + -21x = (20 + 20x)

Solving
7 + -21x = 20 + 20x

Solving for variable 'x'.

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

Add '-20x' to each side of the equation.
7 + -21x + -20x = 20 + 20x + -20x

Combine like terms: -21x + -20x = -41x
7 + -41x = 20 + 20x + -20x

Combine like terms: 20x + -20x = 0
7 + -41x = 20 + 0
7 + -41x = 20

Add '-7' to each side of the equation.
7 + -7 + -41x = 20 + -7

Combine like terms: 7 + -7 = 0
0 + -41x = 20 + -7
-41x = 20 + -7

Combine like terms: 20 + -7 = 13
-41x = 13

Divide each side by '-41'.
x = -0.3170731707

Simplifying
x = -0.3170731707

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