Question

Heeii! Am nevoie de ajutor la tema de la mate. Rezolvați ecuațiile: X+7=29; 2X-5=11; 3X+8=20; 2+X+7)-14=28; 5X-2=X+18

Answer 1

x+7=29
x=29-7
x=22

2x-5=11
2x=11+5
2x=16
x=16:2
x=8

3x+8=20
3x=20-8
3x=12
x=12:3
x=4

(2+x+7)-14=28
2+x+7=28+14
2+x+7=42
2+x=42-7
2+x=35
x=35-2
x=33

5x-2=x+18
5x-x=18+2
4x=20
x=20:4
x=5