SOLUTION: {5x + 3y= 7
{x - 6y = 8
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Question 199061: {5x + 3y= 7
{x - 6y = 8
Answer by RAY100(1637) (Show Source): You can put this solution on YOUR website!
(1) 5x +3y = 7
.
(2) x-6y = 8
.
let (2a) = (2) * (-5) = -5x +30y = -40
.
add (1) + (2) = 0x =33y =-33,,,,or y=-1
.
subst in (2) x-6(-1) = 8,,, x+6=8,,,,x=2
.
check
(1) 10 -3 =7,,,,ok
(2) 2-(-6) =8,,,,ok
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