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

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


Simplifying
3(x + 5) + -1(x + -3) = 20

Reorder the terms:
3(5 + x) + -1(x + -3) = 20
(5 * 3 + x * 3) + -1(x + -3) = 20
(15 + 3x) + -1(x + -3) = 20

Reorder the terms:
15 + 3x + -1(-3 + x) = 20
15 + 3x + (-3 * -1 + x * -1) = 20
15 + 3x + (3 + -1x) = 20

Reorder the terms:
15 + 3 + 3x + -1x = 20

Combine like terms: 15 + 3 = 18
18 + 3x + -1x = 20

Combine like terms: 3x + -1x = 2x
18 + 2x = 20

Solving
18 + 2x = 20

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + 2x = 20 + -18

Combine like terms: 18 + -18 = 0
0 + 2x = 20 + -18
2x = 20 + -18

Combine like terms: 20 + -18 = 2
2x = 2

Divide each side by '2'.
x = 1

Simplifying
x = 1

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