SOLUTION: 3a-5b=1 2a+3b=7 With working out

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Question 701430: 3a-5b=1
2a+3b=7
With working out
Answer by mathbird(71) About Me  (Show Source):
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3a-5b=1-----------eq1
2a+3b=7 ----------eq2
multipling the eq 1 with 3 and eq 2 with 5
9a-15b=3
10a+15b=35
adding the above two equations we get
19a=38
a=38/19
a=2
put the value in eq 1
3a-5b=1
3*2-5b=1
6-5b=1
-5b=1-6
-5b=-5
b=1