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3x +2=-7
5x -4=-14
2x +35=15
7x +14=0
-2x+3=-7
-3x +5=-10
-5x +=5

Răspuns :

Renatemambouko
3x +2=-7
3x=-9
x=-3

5x -4=-14
5x=-10
x=-2

2x +35=15
2x=-20
x=-10

7x +14=0
7x=-14
x=-2

-2x+3=-7
2x=10
x=5

-3x +5=-10
3x=15
x=5
Danamocanu71
a. 3x=-9⇒x=-3;
b. 5x=-10⇒x=-2;
c. 2x=-20⇒x=-10;
d. 7x=-14⇒x=-2;
e. -2x=-10⇒2x=10⇒x=5;
f. -3x=-15⇒3x=15⇒x=5;
-5x=5⇒x=-1;

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