7(x+3)-2(x+4)=28

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Solution for 7(x+3)-2(x+4)=28 equation:


Simplifying
7(x + 3) + -2(x + 4) = 28

Reorder the terms:
7(3 + x) + -2(x + 4) = 28
(3 * 7 + x * 7) + -2(x + 4) = 28
(21 + 7x) + -2(x + 4) = 28

Reorder the terms:
21 + 7x + -2(4 + x) = 28
21 + 7x + (4 * -2 + x * -2) = 28
21 + 7x + (-8 + -2x) = 28

Reorder the terms:
21 + -8 + 7x + -2x = 28

Combine like terms: 21 + -8 = 13
13 + 7x + -2x = 28

Combine like terms: 7x + -2x = 5x
13 + 5x = 28

Solving
13 + 5x = 28

Solving for variable 'x'.

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

Add '-13' to each side of the equation.
13 + -13 + 5x = 28 + -13

Combine like terms: 13 + -13 = 0
0 + 5x = 28 + -13
5x = 28 + -13

Combine like terms: 28 + -13 = 15
5x = 15

Divide each side by '5'.
x = 3

Simplifying
x = 3

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