4(x+3)-5(x+4)=15

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Solution for 4(x+3)-5(x+4)=15 equation:


Simplifying
4(x + 3) + -5(x + 4) = 15

Reorder the terms:
4(3 + x) + -5(x + 4) = 15
(3 * 4 + x * 4) + -5(x + 4) = 15
(12 + 4x) + -5(x + 4) = 15

Reorder the terms:
12 + 4x + -5(4 + x) = 15
12 + 4x + (4 * -5 + x * -5) = 15
12 + 4x + (-20 + -5x) = 15

Reorder the terms:
12 + -20 + 4x + -5x = 15

Combine like terms: 12 + -20 = -8
-8 + 4x + -5x = 15

Combine like terms: 4x + -5x = -1x
-8 + -1x = 15

Solving
-8 + -1x = 15

Solving for variable 'x'.

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

Add '8' to each side of the equation.
-8 + 8 + -1x = 15 + 8

Combine like terms: -8 + 8 = 0
0 + -1x = 15 + 8
-1x = 15 + 8

Combine like terms: 15 + 8 = 23
-1x = 23

Divide each side by '-1'.
x = -23

Simplifying
x = -23

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