4x-3+21=15

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Solution for 4x-3+21=15 equation:


Simplifying
4x + -3 + 21 = 15

Reorder the terms:
-3 + 21 + 4x = 15

Combine like terms: -3 + 21 = 18
18 + 4x = 15

Solving
18 + 4x = 15

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 + 4x = 15 + -18

Combine like terms: 18 + -18 = 0
0 + 4x = 15 + -18
4x = 15 + -18

Combine like terms: 15 + -18 = -3
4x = -3

Divide each side by '4'.
x = -0.75

Simplifying
x = -0.75

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