2 answers:
9. ¹/₃(x + 6) = 8
9.
х+6=8÷1/3
х+6=8×3/1
х+6=24
х=24-6
х=18
15.
х+10=6÷1/5
х+10=6×5/1
х+10=30
х=30-10
х=20
20.
24х+32=10÷1/8
24х+32=10×8/1
24х+32=80
24х=80-32
24х=48
х=48÷24
<span>х=2
</span>
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