Question

Exercitiu 6 va rogg repede si cu rezolvare completa

Answer 1

C)-2x=10
x=10+2
x=12. S={12}
D) -x-5=0
-x=0+5
-x=5
x=-5. S={-5}
E)x-7=3
x=3+7
x=10. S={10}
F) 3(x+1)=3x+3
3x+1=3x+3
3x-3x=3-1
X=2. S={2}
G) -7x=5x
-7x-5x
-12x
x=12. S={12}
H) 2(x+1)=2x-5
2x+1=2x-5
2x-2x=5-1
x=4. S={4}