1)
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3/4 :(3/8 х-3/4)=3/6+1/6
3/8 х - 3/4=3/4 : 4/6
3/8 х - 3/4=3/4 * 3/2
3/8 х=9/8+3/4
3/8 х=9/8+6/8
3/8 х=15/8
х=15/8 : 3/8
х=15/8 * 8/3
х=5
2)
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2/3 :(1/2 х+1/3)=1/30 + 1/6
2/3 :(1/2 х+1/3)=1/30 + 5/30
2/3 :(1/2 х+1/3)=6/30=1/5
1/2 х +1/3=2/3 : 1/5
1/2 х+1/3=2/3 * 5
1/2 х+1/3=10/3
1/2 х=10/3 - 1/3
1/2 х=9/3=3
х=3 : 1/2
х=3*2
х=6