SOLUTION: Solving simultaneous equations 9.7x - 1.5y = 62.7 -2.3x - 7.4y = 8.4 Multiply each by 10 to get rid of decimals Then solve for x in the second equation, so x = -74/23 X y - 840

Algebra ->  Algebra  -> Equations -> SOLUTION: Solving simultaneous equations 9.7x - 1.5y = 62.7 -2.3x - 7.4y = 8.4 Multiply each by 10 to get rid of decimals Then solve for x in the second equation, so x = -74/23 X y - 840      Log On

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 Question 61545This question is from textbook Pre-Algebra : Solving simultaneous equations 9.7x - 1.5y = 62.7 -2.3x - 7.4y = 8.4 Multiply each by 10 to get rid of decimals Then solve for x in the second equation, so x = -74/23 X y - 840/23 Plug x into the first equation 97(-74/23 X y -840/23) - 15y = 62.7 Is this correct so far? I get bogged down in the math. Help!!!This question is from textbook Pre-Algebra Answer by stanbon(57347)   (Show Source): You can put this solution on YOUR website!1st: 9.7x - 1.5y = 62.7 2nd: -2.3x - 7.4y = 8.4 ----------- Multiply each by 10 to get: 3rd: 97x-15y=627 4th:-23x-74y=84 ----------- Multiply 3rd by 74 and 4th by 15 to get: 5th: 7178x-1110y=46398 6th: -345x-1110y=1260 ------------- Subtract 6th from 5th to get: 7523x=45138 x=6 --------- Substitute x=6 into 3rd to solve for y as follows: 97(6)-15y=627 -15y=627-582=45 y=-3 ----------- Solution: x=6, y=-3 Cheers, Stan H.