-7/8(y-21)-1/4y

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Solution for -7/8(y-21)-1/4y equation: 


y in (-oo:+oo)

(-7/8)*(y-21)-((1/4)*y) = 0

(-7/8)*(y-21)+(-1/4)*y = 0

-7/8*(y-21)-y/4 = 0

(-7/8*4*(y-21))/4-y/4 = 0

-7/8*4*(y-21)-y = 0

147/2-9/2*y = 0

(147/2-9/2*y)/4 = 0

(147/2-9/2*y)/4 = 0 // * 4

147/2-9/2*y = 0

147/2-9/2*y = 0 // - 147/2

-9/2*y = -147/2 // : -9/2

y = -147/2/(-9/2)

y = 49/3

y = 49/3

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