Question

2/3X=5/6 7/10X=14/25 2X+1/2=1

Answer 1

解

2/3X=5/6

等式两边同除以2/3得

X=5/6÷2/3

X=5/6×3/2

X=5/4

7/10X=14/25

等式 两边同除以7/10得

X=14/25÷7/10

X=14/25×10/7

X=4/5

2X+1/2=1

等式两边同减去1/2得

2X=1-1/2

2X=1/2

X=1/4