8+x/7=3x-5/6.5 and 0.6/x-3=2.1/x+2

Question

8+x/7=3x-5/6.5 and 0.6/x-3=2.1/x+2

Answer 1

8+x/7=3x-5/6.5

6,5(8+х)=7(3х-5)

52+6,5х=21х-35

6,5х-21х=-35-52

-14,5х=-87

х=-87:(-14,5)

х=6

 

  0.6/x-3=2.1/x+2

0,6(х+2)=2,1(х-3)

0,6х+1,2=2,1х-6,3

0,6х-2,1х=-6,3-1,2

-1,5х=-7,5

х=-7,5:(-1,5)

х=5

Answer 2

6,5 (8 + х) = 7 (3х-5)

52 + 6,5х = 21х - 35

14,5х = 87

х=6

 

 0,6 (х+2) = 2,1 (х-3)

0,6х + 1,2 = 2,1х - 6,3

1,5х = 7,5

х = 5