Question

resolvam as equaçoes 18x-43=65 23x-16=14-17 4x-8=10 7x-2=4x+5

Answer 1

18x-43=65

-18x= -43-65
-18x= -108 (-1)
18x= 108
x= 108/18
x=6

23x -16= 14 -17

23x - 16= -3
23x= -3+16
23x=13
x=13/23
x=0,56...

4x-8=10

4x=10+8
4x=18
x=18/4
x= 4,5

7x-2=4x+5

7x-4x=5+2
3x=7
x=7/3
x=2,333...