Răspuns:
a. 2x=12+18
2x=30
x=30:2
x=15
b. 18-3x=27
18-27=3x
-9=3x
x= -9:3
x= -3
c. 27-x=25
27-25=x
x=2
d. 27x-27=13-4
27x=27+9
27x=36
x=36:27
x=1.3
e. 8x+16-6=x-1
8x-x=6-16-1
7x=-11
x= -11:7
x= -1.57
f. 18-4x-4=2
18-4-2=4x
12=4x
x=12:4
x=3
g. 26-4x+2=24
26+2-24=4x
4=4x
x=4:4
x=1
Explicație pas cu pas:
