Odpowiedź :
1/3x=-4 /•3
x=-12
20-15+x=10
x=10-20+15
x=5
6=16x+5
16x=6-5
16x=1 /:16
x=1/16
5x=7 /:5
x=7/5
x=-12
20-15+x=10
x=10-20+15
x=5
6=16x+5
16x=6-5
16x=1 /:16
x=1/16
5x=7 /:5
x=7/5
20-15 + x= 10
20-15 = 5
5+ x = 10
x= 5
d : 8 + 6 = 13
13 - 6 = 7
8 * 7 = 56
x = 56
4 1/2 + x = 13
13 - 4 1/2 = 8 1/2
x= 8 1/2
3m + 11 - 20 = 21
41 - 20 = 21
41 - 11 = 30
3m = 30
30 : 3 = 10
m = 10
32 + y = 30
32 - 30 = 2
y = -2
2c-9 = 18
27-9 = 18
2c = 27
27 : 2 = 13,5
c. = 13,5
zrobiłam to co umialam licze na naj
20-15 = 5
5+ x = 10
x= 5
d : 8 + 6 = 13
13 - 6 = 7
8 * 7 = 56
x = 56
4 1/2 + x = 13
13 - 4 1/2 = 8 1/2
x= 8 1/2
3m + 11 - 20 = 21
41 - 20 = 21
41 - 11 = 30
3m = 30
30 : 3 = 10
m = 10
32 + y = 30
32 - 30 = 2
y = -2
2c-9 = 18
27-9 = 18
2c = 27
27 : 2 = 13,5
c. = 13,5
zrobiłam to co umialam licze na naj