13у+15у-24=60
13у+15у=60+24
28у=84
у=84/28
у=3
3z-2z+15=32
3z-2z=32-15
z=17
6t+5t-33=0
6t+5t=33
11t=33
t=33/11
t=3
13у+15у-24=60
13у+15у=60+24
28у=84
у=84/28
у=3
3z-2z+15=32
3z-2z=32-15
z=17
6t+5t-33=0
6t+5t=33
11t=33
t=33/11
t=3