Question

ajudaa favor ❤

equação !!

Answer 1

mmc de 3 , 5 , 6 = 30          Obs: (30/3 = 10 x 1 = 10 ; 30/5 = 6 x -2 = -12 ; 30/6 = 5x1=5)

10x/30 -12x/30 = 5/30
-2x/30 = 5/30
x= - 2,5

4x-7=15
4x=22
x= 5,5

8x+ 7= 16
8x=9
x=1,125

15x+3=2x-5
15x-2x=-5-3
13x=-8
x= -0,61

3x+/7 + 1 = 5x + 3/5
15x/35+35/35= 1225x/35 + 21/35
15x/35-175x/35= 21/35-35/35
x= 0,08

0,5x-3=-1,5x
-3=-2x
x=3/2 = 1,5

x-4=12
x=16

-5x +3= -16
-5x=13
x=13/5 = 2,6

9-7x=3x+ 7
-7x-3x= 7-9
-10x=-2
x=0,2