3(x-7)+5(x+11)=20

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Solution for 3(x-7)+5(x+11)=20 equation:


Simplifying
3(x + -7) + 5(x + 11) = 20

Reorder the terms:
3(-7 + x) + 5(x + 11) = 20
(-7 * 3 + x * 3) + 5(x + 11) = 20
(-21 + 3x) + 5(x + 11) = 20

Reorder the terms:
-21 + 3x + 5(11 + x) = 20
-21 + 3x + (11 * 5 + x * 5) = 20
-21 + 3x + (55 + 5x) = 20

Reorder the terms:
-21 + 55 + 3x + 5x = 20

Combine like terms: -21 + 55 = 34
34 + 3x + 5x = 20

Combine like terms: 3x + 5x = 8x
34 + 8x = 20

Solving
34 + 8x = 20

Solving for variable 'x'.

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

Add '-34' to each side of the equation.
34 + -34 + 8x = 20 + -34

Combine like terms: 34 + -34 = 0
0 + 8x = 20 + -34
8x = 20 + -34

Combine like terms: 20 + -34 = -14
8x = -14

Divide each side by '8'.
x = -1.75

Simplifying
x = -1.75

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