а) -8 (11-2а) + 40 = 3 (5а-4)
– 88 + 16a + 40 = 15a – 12
16a – 15a = – 12 – 40 + 88
a = 36
б) 7 (-3 ( m-2)-m)-12=4 (5-3m)-4
раскроем скобки
-21m+42-7m-12 = 20-12m-4
-16m+14 = 0
16m-14 = 0
16m = 14
m = 14/16
m =0,875
а) -8 (11-2а) + 40 = 3 (5а-4) – 88 + 16a + 40 = 15a – 12 16a – 15a = – 12 – 40 + 88 a = 36
б) 7 (-3 ( m-2)-m)-12=4 (5-3m)-4 раскроем скобки -21m+42-7m-12 = 20-12m-4 -16m+14 = 0 16m-14 = 0 16m = 14 m = 14/16 m =0,875
а) -8 (11-2а) + 40 = 3 (5а-4)
– 88 + 16a + 40 = 15a – 12
16a – 15a = – 12 – 40 + 88
a = 36
б) 7 (-3 ( m-2)-m)-12=4 (5-3m)-4
раскроем скобки
-21m+42-7m-12 = 20-12m-4
-16m+14 = 0
16m-14 = 0
16m = 14
m = 14/16
m =0,875
а) -8 (11-2а) + 40 = 3 (5а-4) – 88 + 16a + 40 = 15a – 12 16a – 15a = – 12 – 40 + 88 a = 36
б) 7 (-3 ( m-2)-m)-12=4 (5-3m)-4 раскроем скобки -21m+42-7m-12 = 20-12m-4 -16m+14 = 0 16m-14 = 0 16m = 14 m = 14/16 m =0,875