(16-7х)-(9х-34)=46
16-7х-9х+34=46
-16х+50=46
-16х=-4
х=4
-4(3-5х)=18х-7
-12+20х=18х-7
20х-18х=-7+12
2х=5
х=2.5
(16-7х)-(9х-34)=46
16-7х-9х+34=46
-16х+50=46
-16х=-4
х=4
-4(3-5х)=18х-7
-12+20х=18х-7
20х-18х=-7+12
2х=5
х=2.5