Question

Rezolvați ecuațiile:
1) 2x+3=57
2)x:5=100
3) x•5=100
4)x:3+2=105

Answer 1

a)2x=57-3
   2x=54
    x=27

b)x=5·100
   x=500

c)x=100:5
   x=20

d)x:3=105-2
   x:3=103
   x=103·3
   x=309

Answer 2

1) 2x+3=57
2x=57-3
2x=54
x=54:2
x=27
2) x:5=100
x=100·5
x=500
3) x·5=100
x=100:5
x=20
4) x:3+2=105
x:3=105-2
x:3=103
x=103·3
x=309