multiply 1st equation by 5 and 2nd by 7 and add them -35x-30y=-5 <u>35x-28y=7 +</u> 0x-58y=2
-58y=2 divide both sides by -58 y=-1/29 sub back 5x-4(-1/29)=1 5x+4/29=1 minus 4/29 from both sides note, 1=29/29 5x=25/29 divide bot sides by 5 (or times 1/5) x=5/29
