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6y + 5y = -66 11y = -66 (-66/11 = y) y = -6
6y=5y+2y 6y=7y that does't work its unequal -
5x + 6y + 3y - 2x you have to add like terms. add the y terms and then the x terms 9y + 3x this is your answer
(A) x + 6y = 19 (B) -x + 6y = 17 (A)+(B): 12y = 36 so that y = 3 Substituting this value of y in (A), x + 18 = 19 so x = 1.
It's 0