-3(3.5+1.5y)+y=7

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Solution for -3(3.5+1.5y)+y=7 equation: 


Simplifying
-3(3.5 + 1.5y) + y = 7
(3.5 * -3 + 1.5y * -3) + y = 7
(-10.5 + -4.5y) + y = 7

Combine like terms: -4.5y + y = -3.5y
-10.5 + -3.5y = 7

Solving
-10.5 + -3.5y = 7

Solving for variable 'y'.

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

Add '10.5' to each side of the equation.
-10.5 + 10.5 + -3.5y = 7 + 10.5

Combine like terms: -10.5 + 10.5 = 0.0
0.0 + -3.5y = 7 + 10.5
-3.5y = 7 + 10.5

Combine like terms: 7 + 10.5 = 17.5
-3.5y = 17.5

Divide each side by '-3.5'.
y = -5

Simplifying
y = -5

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