Question

tinh tong 

a,3 / 4 + 1 / 25 + 3 / 100 

b, 2 / 75 + 7 / 5

Answer 1

`3/4 +1/25 +3/100 `

`= 75/100 + 4/100 + 3/100`

`= 82/100 `

`=41/50`

`2/75 +7/5`

`= 2/75 +105/75`

`= 107/75`

Answer 2

`a// 3/4+1/25+3/100=75/100+4/100+3/100=[75+4+3]/100=82/100=41/50`

`b// 2/75+7/5=2/75+105/75=107/75`

Answer 3

`a)3/4+1/25+3/100`

`=(3xx25)/(4xx25)+(1xx4)/(25xx4)+3/100`

`=75/100+4/100+3/100`

`=(75+4+3)/100`

`=82/100`

`b)2/75+7/5`

`=2/75+(7xx15)/(5xx15)`

`=2/75+105/75`

`=(2+105)/75`

`=107/75`

Answer 4

`3/4 + 1/25 + 3/100`

`= 75/100 + 4/100 + 3/100`

`= (75 + 4 + 3)/100`

`= 41/50`

____________________________________

`2/75 + 7/5`

`=2/75 + 105/75`

`= (2 + 105)/75`

`= 107/75`