7
1
3
27
Correct answer is B
5(x+2y)=5
∴ x + 2y = 1.....(i)
4(x+3y)=16=42
x + 3y = 2 .....(ii)
x + 2y = 1.....(i)
x + 3y = 2......(ii)
y = 1
Substitute y = 1 into equation (i)
x+2y=1⟹x+2(1)=1
x+2=1⟹x=−1
∴
3^{0} = 1
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