Question

1) Determine o valor de x:
a) 9x+2-4x=17
b)9x+6-x=-10
c)14x-31-9x=-46
d)-9x-10+20x=34
e)x/2+x/3=30
f)x/5+x=6

Answer 1

A) 9x+2-4x=17
5x=15
x=3

B) 9x+6-x=-10
8x=-16
x=-2

C) 14x-31-9x=-46
5x=-15
x=-3

D) -9x-10+20x=34
11x=44
x=4

E) x/2+x/3=30
MMC(2,3)=6
3x/6+2x/6=30
5x/6=30
x=180/5
x=36

F) x/5+x=6
MMC(1,5)=5
x/5+5x/5=6
6x=30
x=5