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24 April, 21:16

3x+7y=-6

7x+3y=26

solve by elimenation

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  1. 24 April, 21:34
    0
    3x+7y=-6 - 7x+3y=26 - 4x+4y=-32 + 4x on both sides and you end up with 4y=-32+4x now divide both sides by 4 and you get y=-8+x then to incorporate that in one of the problems 3x+7 (-8+x) = - 6 do the distributive property with the 7 into the () and you get 3x-56+7x=-6 now add all common variables and get 10x-56=-6 now add 56 to both sides and you get 10x=50 now divide by 10 on both side and you get x=5 now for getting y to equal a number instead of an equation 3 (5) + 7y=-6 15+7y=-6 subtract 15 on both sides to get 7y=-21 not divide by 7 on both sides to get y=-3 your answers are y=-3 and x=5
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