Toán Lớp 7: x – 1/3 = 2/3
x + 1/5 = 6/5
x – 5/7 = 10/7
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Toán Lớp 7: x – 1/3 = 2/3
x + 1/5 = 6/5
x – 5/7 = 10/7
Comments ( 2 )
x-1/3=2/3
=>x=2/3+1/3
=>x=3/3
=>x=1
Vậy x=1
b)
x+1/5=6/5
=>x=6/5-1/5
=>x=5/5
=>x=1
Vậy x=1
c)
x-5/7=10/7
=>x=10/7+5/7
=>x=15/7
Vậy x=15/7