7(x+3)+x=4(x+5)-4

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Solution for 7(x+3)+x=4(x+5)-4 equation:


Simplifying
7(x + 3) + x = 4(x + 5) + -4

Reorder the terms:
7(3 + x) + x = 4(x + 5) + -4
(3 * 7 + x * 7) + x = 4(x + 5) + -4
(21 + 7x) + x = 4(x + 5) + -4

Combine like terms: 7x + x = 8x
21 + 8x = 4(x + 5) + -4

Reorder the terms:
21 + 8x = 4(5 + x) + -4
21 + 8x = (5 * 4 + x * 4) + -4
21 + 8x = (20 + 4x) + -4

Reorder the terms:
21 + 8x = 20 + -4 + 4x

Combine like terms: 20 + -4 = 16
21 + 8x = 16 + 4x

Solving
21 + 8x = 16 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
21 + 8x + -4x = 16 + 4x + -4x

Combine like terms: 8x + -4x = 4x
21 + 4x = 16 + 4x + -4x

Combine like terms: 4x + -4x = 0
21 + 4x = 16 + 0
21 + 4x = 16

Add '-21' to each side of the equation.
21 + -21 + 4x = 16 + -21

Combine like terms: 21 + -21 = 0
0 + 4x = 16 + -21
4x = 16 + -21

Combine like terms: 16 + -21 = -5
4x = -5

Divide each side by '4'.
x = -1.25

Simplifying
x = -1.25

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