179,4 – x = 32,15
x = 179,4 - 32,15
x = 147,25
3,45 + x = 23
x = 23 - 3,45
x = 19,55
x + 12,45 = 123,5
x = 123,5 - 12,45
x = 111,05
13,56 + x = 21,5
x = 21,5 - 13,56
x = 7,94
`179,4 – x = 32,15`
`=> x= 179,4 –32,15`
`=>x= 147,25`
`-------`
`x + 12,45 = 123,5`
`=>x= 123,5-12,45`
`=>x= 111,05`
`---------`
`3,45 + x = 23`
`=>x= 23-3,45`
`=>x= 19,55`
`---------`
`13,56 + x = 21,5`
`=>x=21,5- 13,56 `
`=>x= 7,94`