1) 8m - 19 = 43; 8m = 62; m = 7.75;
2) 77 : m + 25 = 36; 77 : m = 11; m = 7;
3) 2m + 5 = 13; 2m = 8; m = 4;
4) 252 - 19m = 62; 19m = 190; m = 10;
ответ: 2-е уравнение.
1) 8m - 19 = 43; 8m = 62; m = 7.75;
2) 77 : m + 25 = 36; 77 : m = 11; m = 7;
3) 2m + 5 = 13; 2m = 8; m = 4;
4) 252 - 19m = 62; 19m = 190; m = 10;
ответ: 2-е уравнение.
8m=43+19
8m=62
m=62:8
m=7целых6/8
m=7целых3/4
77:m+25=36
77:m=36-25
77:m=11
77:11=m
m=7
2m+5=13
2m=13-5
2m=8
m=8:2
m=4
252-19m=62
252-62=19m
190=19m
190:19=m
m=10