Question

(a+3b=5 ) (7a - 8b = 6)​

Answer 1

a+ 3b = 5
a = 5 - 3b
now substitute the value of a in eq 2
7a - 8b = 6
7(5 - 3b) - 8b = 6
35 - 21b - 8b = 6
35 - 29b = 6
-29b = 6 - 35
-29b = -29
$b = \frac{ - 29}{ - 29}$
b = 1
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if b = 1
then
value of a =
a + 3b = 5
a +3(1) = 5
a + 3 = 5
a = 5 - 3
a = 2
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Answer 2

a=2

b=1

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