4х+4х=424; 15у-8у=714; 9z+z=500; 10к-к=702; 4j=5j+j=1200; 6t+3t-t=6400.
Ответ:
4х+4х=424;
8х=424
х=424/8
х=53
15у-8у=714;
7у=714
у=714/7
у=102
9z+z=500;
10z=500
z=500/10
z=50
10к-к=702;
9k=702
k=702/9
k=78
4j+5j+j=1200;
10j=1200
j=1200/10
j=120
6t+3t-t=6400
8t=6400
t=6400/8
t=800
Ответ #2:
4x+4x= 424 15y-8y= 714 9z+z= 500 10k-k= 702
8x= 424 7y= 714 10z= 500 9k= 702
x= 424:8 y= 714:7 z= 500:10 k= 702:9
x= 53 y= 102 z= 50 k= 78
4j+5j+j= 1200 6t+3t-t=6400
10j= 1200 8t= 6400
j= 1200:10 t= 6400:8
j= 120 t= 800
Источник: https://znanija.com/task/331264
