Question

solve the D wAla equation plz help me

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Answer 1

D)

Given,

3a+2b=8......(i)

2a+6b=12.....(ii)

Multiply equestion (i) by 2 and (ii) by 3

(i) =>6a+4b=16..........(iii)

(ii) =>6a+18b=36.........(iv)

subtract equestion (iv) - (iii)

and we got

b=10/7

put b=10/7 in equation (i)

3a+2×10/7=8

3a+20/7=8

3a=8-20/7

3a=56-20/7

3a=36/7

a=36/7×3

a=36/21

a=12/7

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