4(x+2)=21(x-3)

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Solution for 4(x+2)=21(x-3) equation:


Simplifying
4(x + 2) = 21(x + -3)

Reorder the terms:
4(2 + x) = 21(x + -3)
(2 * 4 + x * 4) = 21(x + -3)
(8 + 4x) = 21(x + -3)

Reorder the terms:
8 + 4x = 21(-3 + x)
8 + 4x = (-3 * 21 + x * 21)
8 + 4x = (-63 + 21x)

Solving
8 + 4x = -63 + 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
8 + 4x + -21x = -63 + 21x + -21x

Combine like terms: 4x + -21x = -17x
8 + -17x = -63 + 21x + -21x

Combine like terms: 21x + -21x = 0
8 + -17x = -63 + 0
8 + -17x = -63

Add '-8' to each side of the equation.
8 + -8 + -17x = -63 + -8

Combine like terms: 8 + -8 = 0
0 + -17x = -63 + -8
-17x = -63 + -8

Combine like terms: -63 + -8 = -71
-17x = -71

Divide each side by '-17'.
x = 4.176470588

Simplifying
x = 4.176470588

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