1)
2/7x=7
x = 7:2/7
x = 7*7/2
x=49/2
x=24ц1/2
2)
9x=1
x=1/9
3)
1 5/8x = 1
13/8x = 1
x = 1: 13/8
x=1*8/13
x=8/13
4)
1/2x=1
x=1:1/2
x=1*2/1
x=1*2
x=2
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Answers & Comments
1)
2/7x=7
x = 7:2/7
x = 7*7/2
x=49/2
x=24ц1/2
2)
9x=1
x=1/9
3)
1 5/8x = 1
13/8x = 1
x = 1: 13/8
x=1*8/13
x=8/13
4)
1/2x=1
x=1:1/2
x=1*2/1
x=1*2
x=2