3(-21+4y)+2y=7

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Solution for 3(-21+4y)+2y=7 equation: 


Simplifying
3(-21 + 4y) + 2y = 7
(-21 * 3 + 4y * 3) + 2y = 7
(-63 + 12y) + 2y = 7

Combine like terms: 12y + 2y = 14y
-63 + 14y = 7

Solving
-63 + 14y = 7

Solving for variable 'y'.

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

Add '63' to each side of the equation.
-63 + 63 + 14y = 7 + 63

Combine like terms: -63 + 63 = 0
0 + 14y = 7 + 63
14y = 7 + 63

Combine like terms: 7 + 63 = 70
14y = 70

Divide each side by '14'.
y = 5

Simplifying
y = 5

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