8u+9v-3(5u-7y)=

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Solution for 8u+9v-3(5u-7y)= equation:


Simplifying
8u + 9v + -3(5u + -7y) = 0
8u + 9v + (5u * -3 + -7y * -3) = 0
8u + 9v + (-15u + 21y) = 0

Reorder the terms:
8u + -15u + 9v + 21y = 0

Combine like terms: 8u + -15u = -7u
-7u + 9v + 21y = 0

Solving
-7u + 9v + 21y = 0

Solving for variable 'u'.

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

Add '-9v' to each side of the equation.
-7u + 9v + -9v + 21y = 0 + -9v

Combine like terms: 9v + -9v = 0
-7u + 0 + 21y = 0 + -9v
-7u + 21y = 0 + -9v
Remove the zero:
-7u + 21y = -9v

Add '-21y' to each side of the equation.
-7u + 21y + -21y = -9v + -21y

Combine like terms: 21y + -21y = 0
-7u + 0 = -9v + -21y
-7u = -9v + -21y

Divide each side by '-7'.
u = 1.285714286v + 3y

Simplifying
u = 1.285714286v + 3y

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