(1444-4х):15=16 2х+7х-12=69

Question

(1444-4х):15=16
2х+7х-12=69

Answer 1

(1444-4х):15=16
1444-4х=16*15
1444-4х=240
-4х=240-1444
-4х=-1204
х=(-1204):(-4)
х=301
2х+7х-12=69
2х+7х=69+12
9х=81
х=81:9
х=9