Răspuns :
1. X + 13 = 28
X = 28 - 13
X = 15
2. 20 - x = 12
x = 20 - 12
x = 8
3. X - 11 = 79
X = 79 + 11
X = 90
4. 10 + x = 6
x = 6
Salutare!:)
x+13=28
x=28-13
x=15
20-x=12
x=20-12
x=8
x-11=79
x=79+11
x=90
10+x=6
x=6-10
x=-4
1. X + 13 = 28
X = 28 - 13
X = 15
2. 20 - x = 12
x = 20 - 12
x = 8
3. X - 11 = 79
X = 79 + 11
X = 90
4. 10 + x = 6
x = 6
Salutare!:)
x+13=28
x=28-13
x=15
20-x=12
x=20-12
x=8
x-11=79
x=79+11
x=90
10+x=6
x=6-10
x=-4