SOLVE THE FOLLOWING LINEAR EQUATIONS BY SUBSTITUTION METHOD:
(a). X-2Y=1
2X+Y=7
(b). X+2Y=5
2X-3Y= - 4
( c). 2X-Y=1
X+2Y=8
(d) X+3Y=15
2X-Y=2
(e) X+Y=6
2X-Y =0
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(a)
(b)
(c)
(d)
(e)
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