4x+7=1+21(2x+3)

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Solution for 4x+7=1+21(2x+3) equation:


Simplifying
4x + 7 = 1 + 21(2x + 3)

Reorder the terms:
7 + 4x = 1 + 21(2x + 3)

Reorder the terms:
7 + 4x = 1 + 21(3 + 2x)
7 + 4x = 1 + (3 * 21 + 2x * 21)
7 + 4x = 1 + (63 + 42x)

Combine like terms: 1 + 63 = 64
7 + 4x = 64 + 42x

Solving
7 + 4x = 64 + 42x

Solving for variable 'x'.

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

Add '-42x' to each side of the equation.
7 + 4x + -42x = 64 + 42x + -42x

Combine like terms: 4x + -42x = -38x
7 + -38x = 64 + 42x + -42x

Combine like terms: 42x + -42x = 0
7 + -38x = 64 + 0
7 + -38x = 64

Add '-7' to each side of the equation.
7 + -7 + -38x = 64 + -7

Combine like terms: 7 + -7 = 0
0 + -38x = 64 + -7
-38x = 64 + -7

Combine like terms: 64 + -7 = 57
-38x = 57

Divide each side by '-38'.
x = -1.5

Simplifying
x = -1.5

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