# SOLUTION: Solve for a and b : -5b - 2a = 46 7a - 5b = 19

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 Click here to see ALL problems on Equations Question 548342: Solve for a and b : -5b - 2a = 46 7a - 5b = 19Found 2 solutions by mananth, stanbon:Answer by mananth(12270)   (Show Source): You can put this solution on YOUR website!-5 b -2 a = 46 .............1 -5 b + 7 a = 19 .............2 multiply equation (1) by -1 we get 5b+2a=-46 add to (2) 9a=-27 /9 a=-3 plug the value of a in (1) -5b-2(-3)=46 -5b+6=46 -5b=40 /-5 b=-8 Answer by stanbon(57219)   (Show Source): You can put this solution on YOUR website!Solve for a and b : -5b - 2a = 46 7a - 5b = 19 --------------------- Rearrange: -2a - 5b = 46 7a - 5b = 19 --------------------- Subtract and solve for "a": 9a = -27 a = -3 -------- Solve for "b": -2a - 5b = 46 -2*-3 -5b = 46 6 - 5b = 46 -5b = 40 b = -8 ------------------ Solution: (-3,-8) ========================= Cheers, Stan H. =========================