How to solve a simultaneous equation?
2x+3y=7 ----(1)x-y=1 -----(2)First, look at how you can eliminate one of the unknowns. Here we can multiply the second equation by 3 to make eliminate the "3y" in the first equation. We will then have: 2x+3y=7 ----(1) +) 3x-3y=3-----(2) 5x = 10--> x= 2Then we substitute x into either equation (1) or (2) to find ySub x=2 into (1),2x2+3y=7--> y= (7-4)/3 = 1
HS
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