-3(4х-2) = 2(11-2х)
(-3)×4х-(-3)×2 = 2×11-2×2х
-12х-(-6) = 22-4х
-12х+6 = 22-4х
-12х+4х = 22-6
-8х = 16
-х = 16:8
-х = 2
х = -2
вроде так)))
-20:(13+6*(-3))=-20:(13+(-18))=-20:(-5)=4
351=17 *х +11
17х = 351-11
17х=340
х=20