Question

x\3 = 8\12 b) 1\6=50\x c) 1\3= x-1\x+1                     com conta  pf

Answer 1

a) x/3 = 8/12
x=(8/12)*3
x= 8*3/12
x=24/12
x=2

b) 1/6=50/x
1*x=6*50
x=300

c) 1/3=x-1/x+1
1*(x+1)=3*(x-1)
x+1=3x-3
x-3x=-3-1
-2x=-4 (*-1)
2x=4
x=4/2
x=2

Answer 2

a) x = 2

x = 8
3 = 12

x = 24/12
x = 2
__________

b) x = 300

1 = 50
6 = x

x = 300
__________

c) x = 1

1 = x - 1
3 = x + 1

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