4(2x+5)-21=7x+6

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Solution for 4(2x+5)-21=7x+6 equation:


Simplifying
4(2x + 5) + -21 = 7x + 6

Reorder the terms:
4(5 + 2x) + -21 = 7x + 6
(5 * 4 + 2x * 4) + -21 = 7x + 6
(20 + 8x) + -21 = 7x + 6

Reorder the terms:
20 + -21 + 8x = 7x + 6

Combine like terms: 20 + -21 = -1
-1 + 8x = 7x + 6

Reorder the terms:
-1 + 8x = 6 + 7x

Solving
-1 + 8x = 6 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
-1 + 8x + -7x = 6 + 7x + -7x

Combine like terms: 8x + -7x = 1x
-1 + 1x = 6 + 7x + -7x

Combine like terms: 7x + -7x = 0
-1 + 1x = 6 + 0
-1 + 1x = 6

Add '1' to each side of the equation.
-1 + 1 + 1x = 6 + 1

Combine like terms: -1 + 1 = 0
0 + 1x = 6 + 1
1x = 6 + 1

Combine like terms: 6 + 1 = 7
1x = 7

Divide each side by '1'.
x = 7

Simplifying
x = 7

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