SOLVE THE SYSTEM OF EQUATIONS BY ELIMINATION METHOD.
1. 5x+y=9, 10x-7y=-18
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STEP BY STEP EXPLANATION GIVEN IN THE ABOVE PIC
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Answer:
x=1, y=4
Step-by-step explanation:
Eliminate equation (1) and (2)
multiply equation (1) by 2
= 2(5x+y= 9) ....(1)
= 10x-7y= -18 ....(2)
subtract equation (2) by (1)
= 10x+2y=18
= 10x-7y= -18
= - + +
= 9y= 36
= y=4
put value of y=4 in equation (1)
= 5x+4= 9
= 5x= 5
= x= 1
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