-7x-2y=-13 and x-2y=1 answer
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-7x-2y=-13-----------(1)
x-2y=1-----------(2)
(-)
_________
-8x =-14
=>x=14/8=7/4
now putting the value of x in equation (1) we get -7(7/4)-2y=13
=>-49/4- 2y =13
=>-2y= 13+49/4
=>-2y=101/4
=>y=101/4×2=101/2=5.5
x-2y=1-----------(2)
(-)
_________
-8x =-14
=>x=14/8=7/4
now putting the value of x in equation (1) we get -7(7/4)-2y=13
=>-49/4- 2y =13
=>-2y= 13+49/4
=>-2y=101/4
=>y=101/4×2=101/2=5.5
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