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Question:
12\frac{1}{2}21+ 13\frac{1}{3}31+ ________ = 1
A5/6
B1/6
C2/3
D1/3
Answer:
12+13+x=1\frac{1}{2}+\frac{1}{3}+x=121+31+x=1
56+x=1\frac56+x=165+x=1
x=1−56x=1-\frac56x=1−65
x=1−56=16x=1- \frac56 = \frac16x=1−65=61
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