Question

sa se rezolve ecuatiile
2 . (x + 2)=16
3 . ( x-3)=9
4 . (x+ 5)=28
x + 5 +3x=25
2 .(x-5)=20
unde am pus punct este inmultit , va rog sa ma ajutati

Answer 1

2×(x+2)=16

x+2=16:2

x+2=8

x=8-2

x=6

3×(x-3)=9

x-3=9:3

x-3=3

x=3+3

x=6

4×(x+5)=28

x+5=28:4

x+5=7

x=2

2×(x-5)=20

x-5=20:2

x-5=10

x=10+5

x=15

x+5+3x=25

4x=25-5

4x=20

x=20:4

x=5