Question

If3a+2b=12 and 2a+4b=10 find and b

Answer 1

3a +2b = 12
On multiplying both sides by 2,we get
6a +4b = 24 -----------(1)

2a+4b = 10
On multiplying both sides by 3,we get
6a +12b = 30 -------------(2)

On subtracting equation 1 by equation 2, we get

8b = 6
b = 3/4

a = 7/2

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