Question

Va rog mult ajutati-ma
Verificati care dintre elementele multimii A={-5,-2,-1,0,4,10} este solutie a ecuatiei:
a) -x-4=1;
b)2x-6=-6;
c)(-200):x=-20;
d)x*(-15)=30;
e) 1-3x=x+1;
f) 10+2x=0

Answer 1

a)-x=4+1
-x=5
x=-5
b)2x=-6-6
2x=-12
x=-12/2
x=-6
c)x=200-20
x=180/20
x=9
d)x=30-15
x=15
e)-2x=1x
2x=2+1
2x=3
x=3supra2
f)2x=10-0
2x-10
x=10/2
x=5
CUPLACERE