Решите уравнение 1) 45 : ( 4m - m ) = 3 2) ( 19 n - 6 n ) : 4 = 26 3) (16 m + 5 m ) : 18 = 7 4) ( 17 n - 8 n ) • 13 =351 заранее ! )

1) 45 : ( 4m - m ) = 3

3m=45:3

3m=15

M=15:3

M=5

2) ( 19 n - 6 n ) : 4 = 26

13n=26*4

13n=104

N=104:13

N=8

3) (16 m + 5 m ) : 18 = 7

21m=7*18

21m=126

M=126:21

M=6

4) ( 17 n - 8 n ) • 13 =351

9n=351:13

9n=27

N=27:9

N=3

1) 45:( 4m-m)= 3;
45: 3m=3;
3m=45:3;
3m= 15
m=15:3
m= 5
2) (19n-6n) :4 = 26;
13n:4=26;
13n=26:4;
13n=6,5
n= 13:6,5
n= 2
3) (16m+5m):18=7;
21m:18=7;
21/18m=7;
7/6 m=7;
m=6.
4) (17n-8n)•13 =351;
9n•13=351;
9n =351÷13;
9n =27;
n= 27÷9;
n= 3.
Все)