3+4(5x-8)=21

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Solution for 3+4(5x-8)=21 equation:


Simplifying
3 + 4(5x + -8) = 21

Reorder the terms:
3 + 4(-8 + 5x) = 21
3 + (-8 * 4 + 5x * 4) = 21
3 + (-32 + 20x) = 21

Combine like terms: 3 + -32 = -29
-29 + 20x = 21

Solving
-29 + 20x = 21

Solving for variable 'x'.

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

Add '29' to each side of the equation.
-29 + 29 + 20x = 21 + 29

Combine like terms: -29 + 29 = 0
0 + 20x = 21 + 29
20x = 21 + 29

Combine like terms: 21 + 29 = 50
20x = 50

Divide each side by '20'.
x = 2.5

Simplifying
x = 2.5

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