X+7:12=3:4=x-1:6=1:9=

Question

X+7:12=3:4=x-1:6=1:9=

Answer 1

Х+7\12=3\4 \*12
12(х+7)\12=36\48
х+7=3\4
х=-7+3\4
х=-6,25

х-1\6=1\9 \*18
18х-18\6=18\9
18х-3=2
18х=3+2
18х=5
х = 3,6