Question

Rezolvati ecuatiile:

Answer 1

Salut,

a) x+0,7 = 2,5
x = 2,5-0,7
x = 1,8.

b) x-21,12 = 13,88
x = 13,88+21,12
x = 35.

c) x-2,3+3,4 = 4,5
x-1,1 = 4,5
x = 4,5+1,1
x = 5,6.

d) x-2,3•3,4 = 4,5
x-7,82 = 4,5
x = 4,5+7,82
x = 12,32.

e) 3,4-x+2,3 = 1,7
5,7-x = 1,7
-x = 1,7-5,7
-x = -4 /•(-1)
x = 4.

f) 1,2+2,3+3,4-x = 1,9
3,5+3,4-x = 1,9
6,9-x = 1,9
-x = 1,9-6,9
-x = -5 /•(-1)
x = 5.


Succes! :3