5a+3(2a-5)=4(12-a)-3
5a + 6a – 15 = 48 – 4a – 3
5a + 6a + 4a = – 3 + 48 + 15
15a = 60
a = 4
5(9t-3(2t-4))+12=4(t+29)
раскроем скобки
45t-30t+60+12 = 4t+116
11t-44 = 0
11t = 44
t = 4
2(5x-2(x+3))-15=17+x+11
10x-4x-12-15 = 17+x+11
5x-55 = 0
5x = 55
x = 11
5a+3(2a-5)=4(12-a)-3
5a + 6a – 15 = 48 – 4a – 3
5a + 6a + 4a = – 3 + 48 + 15
15a = 60
a = 4
5(9t-3(2t-4))+12=4(t+29)
раскроем скобки
45t-30t+60+12 = 4t+116
11t-44 = 0
11t = 44
t = 4
2(5x-2(x+3))-15=17+x+11
раскроем скобки
10x-4x-12-15 = 17+x+11
5x-55 = 0
5x = 55
x = 11