-21+x=5+4(1+4x)

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Solution for -21+x=5+4(1+4x) equation:


Simplifying
-21 + x = 5 + 4(1 + 4x)
-21 + x = 5 + (1 * 4 + 4x * 4)
-21 + x = 5 + (4 + 16x)

Combine like terms: 5 + 4 = 9
-21 + x = 9 + 16x

Solving
-21 + x = 9 + 16x

Solving for variable 'x'.

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

Add '-16x' to each side of the equation.
-21 + x + -16x = 9 + 16x + -16x

Combine like terms: x + -16x = -15x
-21 + -15x = 9 + 16x + -16x

Combine like terms: 16x + -16x = 0
-21 + -15x = 9 + 0
-21 + -15x = 9

Add '21' to each side of the equation.
-21 + 21 + -15x = 9 + 21

Combine like terms: -21 + 21 = 0
0 + -15x = 9 + 21
-15x = 9 + 21

Combine like terms: 9 + 21 = 30
-15x = 30

Divide each side by '-15'.
x = -2

Simplifying
x = -2

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