3x+4(x+7)=91

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Solution for 3x+4(x+7)=91 equation:


Simplifying
3x + 4(x + 7) = 91

Reorder the terms:
3x + 4(7 + x) = 91
3x + (7 * 4 + x * 4) = 91
3x + (28 + 4x) = 91

Reorder the terms:
28 + 3x + 4x = 91

Combine like terms: 3x + 4x = 7x
28 + 7x = 91

Solving
28 + 7x = 91

Solving for variable 'x'.

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

Add '-28' to each side of the equation.
28 + -28 + 7x = 91 + -28

Combine like terms: 28 + -28 = 0
0 + 7x = 91 + -28
7x = 91 + -28

Combine like terms: 91 + -28 = 63
7x = 63

Divide each side by '7'.
x = 9

Simplifying
x = 9

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