20=5[-3+x]

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Solution for 20=5[-3+x] equation: 


Simplifying
20 = 5[-3 + x]
20 = [-3 * 5 + x * 5]
20 = [-15 + 5x]

Solving
20 = -15 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
20 + -5x = -15 + 5x + -5x

Combine like terms: 5x + -5x = 0
20 + -5x = -15 + 0
20 + -5x = -15

Add '-20' to each side of the equation.
20 + -20 + -5x = -15 + -20

Combine like terms: 20 + -20 = 0
0 + -5x = -15 + -20
-5x = -15 + -20

Combine like terms: -15 + -20 = -35
-5x = -35

Divide each side by '-5'.
x = 7

Simplifying
x = 7

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