5(x+1)+4(x+4)=75

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Solution for 5(x+1)+4(x+4)=75 equation:


Simplifying
5(x + 1) + 4(x + 4) = 75

Reorder the terms:
5(1 + x) + 4(x + 4) = 75
(1 * 5 + x * 5) + 4(x + 4) = 75
(5 + 5x) + 4(x + 4) = 75

Reorder the terms:
5 + 5x + 4(4 + x) = 75
5 + 5x + (4 * 4 + x * 4) = 75
5 + 5x + (16 + 4x) = 75

Reorder the terms:
5 + 16 + 5x + 4x = 75

Combine like terms: 5 + 16 = 21
21 + 5x + 4x = 75

Combine like terms: 5x + 4x = 9x
21 + 9x = 75

Solving
21 + 9x = 75

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 9x = 75 + -21

Combine like terms: 21 + -21 = 0
0 + 9x = 75 + -21
9x = 75 + -21

Combine like terms: 75 + -21 = 54
9x = 54

Divide each side by '9'.
x = 6

Simplifying
x = 6

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