Question

3/5x=20*1/4 25％+10x=4/5 x-15％x=68

Answer 1

3/5x=20*1/4

x = 5 x 5/3

x = 3分之25

25％+10x=4/5

10x = 0.8 - 0.25

10x = 0.55

x = 0.055

x-15％x=68

0.85x = 68

x = 80

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