Question

x + 53,67 = 139,5 x 12

x - 42,3 = 21,15 + 13,7

7,2 + x : 4 = 108

x x 4 -7,2 =10,8

Answer 1

\(x+53,67=139,5\times12\)

\(x+53,67=1674\)

\(x=1620,33\)

 

\(x-42,3=21,15+13,7\)

\(x-42,3=34,85\)

\(x=77,15\)

 

\(7,2+x:4=108\)

\(x:4=100,8\)

\(x=403,2\)

 

\(x\times4-7,2=10,8\)

\(x\times4=18\)

\(x=4,5\)

Answer 2

x + 53,67 = 139,5 x 12

x+53,67=1674

x=1674-53,67

x=1620,33

x - 42,3 = 21,15 + 13,7

x-42,3=34,85

x=34,85+42,3

x=77,15

7,2 + x : 4 = 108

x:4=108-7,2

x:4=100,8

x=100,8x4

x=403,2

x x 4 -7,2 =10,8

x x 4=10,8+7,2

x x 4=18

x=18:4

x=4,5

Answer 3

`x + 53,67 = 139,5 xx 12`

`=>x + 53,67 = 1674`

`=>x=1674-53,67`

`=>x=1620,33`

`-------`

`x - 42,3 = 21,15 + 13,7`

`=>x - 42,3 =34,85`

`=>x=34,85+42,3`

`=>x=77,15`

`-------`

`7,2 + x : 4 = 108`

`=>x:4=108-7,2`

`=>x:4=100,8`

`=>x=100,8 xx 4`

`=>x=403,2`

`-------`

`x xx 4 -7,2 =10,8`

`=>x xx 4=10,8 + 7,2`

`=>x xx 4= 18`

`=>x=18:4`

`=>x=4,5`

Answer 4

\(x+53,67=139,5\times12\)

\(x+53,67=1674\)

\(x=1674-53,67\)

\(x=1620,33\)

-------------------

\(x - 42,3 = 21,15 + 13,7\)

\(x - 42,3 = 34,85\)

\(x =34,85+42,3\)

\(x=77,15\)

----------------------

\(7,2 + x : 4 = 108\)

\( x : 4 = 108-7,2\)

\( x : 4 = 100,8\)

\(x=100,8\times4\)

\(x=403,2\)

-------------

\(x\times4-7,2=10,8\)

\(x\times4=10,8+7,2\)

\(x\times4=18\)

\(x=18:4\)

\(x=4,5\)