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

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


Simplifying
7(3 + -1x) + -1 = 9x + 4
(3 * 7 + -1x * 7) + -1 = 9x + 4
(21 + -7x) + -1 = 9x + 4

Reorder the terms:
21 + -1 + -7x = 9x + 4

Combine like terms: 21 + -1 = 20
20 + -7x = 9x + 4

Reorder the terms:
20 + -7x = 4 + 9x

Solving
20 + -7x = 4 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
20 + -7x + -9x = 4 + 9x + -9x

Combine like terms: -7x + -9x = -16x
20 + -16x = 4 + 9x + -9x

Combine like terms: 9x + -9x = 0
20 + -16x = 4 + 0
20 + -16x = 4

Add '-20' to each side of the equation.
20 + -20 + -16x = 4 + -20

Combine like terms: 20 + -20 = 0
0 + -16x = 4 + -20
-16x = 4 + -20

Combine like terms: 4 + -20 = -16
-16x = -16

Divide each side by '-16'.
x = 1

Simplifying
x = 1

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