Question

решите уравнения:10к-к=702 , 4j+5j+j=1200 , 6t+3t-t=6400 с проверкой

Answer 1

1) 10к-к=702
9к=702
к=78
k=702:9=78
2)4j+5j+J=1200
10j=1200
j=120
j=1200:10=120
3)6t+3t-t=6400
8t=6400
t=800
t=6400:8=800