Question

Rezolvati ecuatiile:
1,5+x=2
2x-3=-2
(2x+1/3):4=1/3
7,2:x=3,6
Day coroana!

Answer 1

x=2-1.5
x=0,5
2)2x=-2+3
2x=1
x=1:2
x=0,5
3)2x+1/3=1/3•4
2x+1/3=4/3
2x=4/3-1/3
2x=1 întreg
x=1:2
x=0,5
4)7,2:3,6=2

Answer 2

1,5+x=2
x=2-1,5
x=0,5
b)
2x-3=-2
2x=-2+3
2x=1
x= 1 pe 2
x= 0,5
c)
(2x+1/3):4=1/3
amplific cu 3
(6x+1/3):4=1/3
(6x+1)/3 x 1/4 = 1/3
6x+1/12= 1/3
6x+1=12 :3
6x+1=4
6x=3
x=3/6
x=1/2
x=0,5
d)
7,2:x=3,6
x=3,6:7,2
x=36:72( am mutat virgula la fiecare peste o zecimala)
x=simplificam 72 cu 36 si ne da 1:2 adica 1/2
x=0,5
Bafta sper ca te-am ajutat !!