7(4x+3)=9(x+4)-20

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Solution for 7(4x+3)=9(x+4)-20 equation:


Simplifying
7(4x + 3) = 9(x + 4) + -20

Reorder the terms:
7(3 + 4x) = 9(x + 4) + -20
(3 * 7 + 4x * 7) = 9(x + 4) + -20
(21 + 28x) = 9(x + 4) + -20

Reorder the terms:
21 + 28x = 9(4 + x) + -20
21 + 28x = (4 * 9 + x * 9) + -20
21 + 28x = (36 + 9x) + -20

Reorder the terms:
21 + 28x = 36 + -20 + 9x

Combine like terms: 36 + -20 = 16
21 + 28x = 16 + 9x

Solving
21 + 28x = 16 + 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.
21 + 28x + -9x = 16 + 9x + -9x

Combine like terms: 28x + -9x = 19x
21 + 19x = 16 + 9x + -9x

Combine like terms: 9x + -9x = 0
21 + 19x = 16 + 0
21 + 19x = 16

Add '-21' to each side of the equation.
21 + -21 + 19x = 16 + -21

Combine like terms: 21 + -21 = 0
0 + 19x = 16 + -21
19x = 16 + -21

Combine like terms: 16 + -21 = -5
19x = -5

Divide each side by '19'.
x = -0.2631578947

Simplifying
x = -0.2631578947

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