7(8y-5)=21y

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Solution for 7(8y-5)=21y equation:


Simplifying
7(8y + -5) = 21y

Reorder the terms:
7(-5 + 8y) = 21y
(-5 * 7 + 8y * 7) = 21y
(-35 + 56y) = 21y

Solving
-35 + 56y = 21y

Solving for variable 'y'.

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

Add '-21y' to each side of the equation.
-35 + 56y + -21y = 21y + -21y

Combine like terms: 56y + -21y = 35y
-35 + 35y = 21y + -21y

Combine like terms: 21y + -21y = 0
-35 + 35y = 0

Add '35' to each side of the equation.
-35 + 35 + 35y = 0 + 35

Combine like terms: -35 + 35 = 0
0 + 35y = 0 + 35
35y = 0 + 35

Combine like terms: 0 + 35 = 35
35y = 35

Divide each side by '35'.
y = 1

Simplifying
y = 1

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