Question

Rezolvați în Z ecuațiile:
a) 3(x+2)=-6
2(x-4)=4
4(x+5)=-12
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Answer 1

Răspuns:

a) 3(x+2)=-6

3x + 6=-6

3x=-6-6

3x=-12

x=-12/3=-4

2(x-4)=4

2x -8=4

2x=4+8

2x=12

x=12/2=6

4(x+5)=-12

4x +20=-12

4x=-20-12

4x=-32

x=-32/4=-8

Answer 2

a) 3(x+2)=-6
3x+6=-6
3x=-6-6
3x=-12
x=-12:3
x=-4

b) 2(x-4)=4
2x-8=4
2x=4+8
2x=12
x=6

C) 4(x+5)=-12
4x+20=-12
4x=-12-20
4x=-32
x=-32:4
x=-8
Succes !!!