-2y+7+6y=21

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Solution for -2y+7+6y=21 equation:


Simplifying
-2y + 7 + 6y = 21

Reorder the terms:
7 + -2y + 6y = 21

Combine like terms: -2y + 6y = 4y
7 + 4y = 21

Solving
7 + 4y = 21

Solving for variable 'y'.

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

Add '-7' to each side of the equation.
7 + -7 + 4y = 21 + -7

Combine like terms: 7 + -7 = 0
0 + 4y = 21 + -7
4y = 21 + -7

Combine like terms: 21 + -7 = 14
4y = 14

Divide each side by '4'.
y = 3.5

Simplifying
y = 3.5

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