Question

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

Answer 1

Х+712=34 *12
12(х+7)12=3648
х+7=34
х=-7+34
х=-6,25

х-16=19 *18
18х-186=189
18х-3=2
18х=3+2
18х=5
х = 3,6