Toán a)x:7/9=2,5:7,5 b)26/x=12/42 2 c)x/6=24/25 23/07/2021 By aikhanh a)x:7/9=2,5:7,5 b)26/x=12/42 2 c)x/6=24/25
a)x:7/9=2,5:7,5x:7/9=5/2:15/2x:7/9=5/2.2/15x:7/9=1/3x=7/9.1/3x=7/27b)26/2:x=12/4218:x=2/7x=18:2/7x=63c)x/6=24/25 x.25=24.6x.25=144x=144/25 Trả lời
Đáp án: Giải thích các bước giải: a)x÷7/9=2,5÷7,5 x÷7/9=1/3 x=1/3×7/9 x=7/27 b)26/x=12/42 2 26/x=2/7×2 26/x=4/7 x=26÷4/7 x=91/2 c)x/6=24/25 X=24/25×6 X=144/25 Trả lời
a)x:7/9=2,5:7,5
x:7/9=5/2:15/2
x:7/9=5/2.2/15
x:7/9=1/3
x=7/9.1/3
x=7/27
b)26/2:x=12/42
18:x=2/7
x=18:2/7
x=63
c)x/6=24/25
x.25=24.6
x.25=144
x=144/25
Đáp án:
Giải thích các bước giải:
a)x÷7/9=2,5÷7,5
x÷7/9=1/3
x=1/3×7/9
x=7/27
b)26/x=12/42
2
26/x=2/7×2
26/x=4/7
x=26÷4/7
x=91/2
c)x/6=24/25
X=24/25×6
X=144/25