Question

me ajudem por favor!!

Answer 1

k) (x-3)/4 -(2x-1)/5=5

5.(x-3)- 4.(2x-1)/20=5

5x-15-8x+4=5.20

-3x-11=100

-3x=100+11

x=-111/3

x=-37

l) (x-1)/2 + (x-3)/3 =6

3.(x-1)+ 2.(x-3)/6=6

3x-3+2x-6=6.6

5x-9=36

5x=36+9

x=45/4

x=9

m) (5x-7)/2=1/2 +x

(5x-7)/2 -x= 1/2

5x-7-2x/2=1/2

3x-7=2.1/2

3x-7=1

3x=1+7

x=8/3

n) 2x-1/3= x - (x-1)/5

2x-1/3=5x-x+1/5

2x-1/3=4x+1/5 --> multiplicar cruzado

5.(2x-1)=3.(4x+1)

10x-5=12x+3

12x-10x=-5-3

2x=-8

x=-8/2

x=-4