Question

Determine as raízes seguintes:
A- x/2+x/3+x/1 = 14
B- x + x/2 + 3x/4 = 18
C- x/2 + x/3 = 7+2x /3
D- 9x -4 = 6x +8

Answer 1

A- x/2+x/3+x/1=14
mmc entre 1,2,3=6
3x+2x+6x=84
11x=84
x=84/11

B- x+x/2+3x/4=18
mmc entre 4,2=4
4x+2x+3x=72
9x=72
x=72/9
x=8

C- x/2+x/3=(7+2x)/3
mmc entre 2,3,7= 42
21x+14x=98+28x
35x-28x=98
7x=98
x=98/7
x= 14

D- 9x-4=6x+8
9x-6x=8+4
3x=12
x=12/3
x=4