1/3(9x-21)-1/7(63x-9y)

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Solution for 1/3(9x-21)-1/7(63x-9y) equation: 


x in (-oo:+oo)

(1/3)*(9*x-21)-((1/7)*(63*x-(9*y))) = 0

(1/3)*(9*x-21)+(-1/7)*(63*x-9*y) = 0

1/3*(9*x-21)-1/7*(63*x-9*y) = 0

1/3*(9*x-21)-1/7*(63*x-9*y) = 0

9/7*y-6*x-7 = 0

9/7*y-6*x-7 = 0

9/7*y-6*x-7 = 0 // - 9/7*y-7

-6*x = -(9/7*y-7) // : -6

x = (-(9/7*y-7))/(-6)

x = (7-(9/7*y))/(-6)

x = (7-(9/7*y))/(-6)

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