Question

como faz a expressão 2/3 + 3/4

Answer 1

2  + 3   =     4.2 + 3.3  =  8 + 9  =   17
3     4               12             12         12

R.: 17
      12
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mmc (3,4) = 12

3,4: 2
3,2: 2
3,1: 3
1,1    = 2.2.3 = 4.3 = 12

Answer 2

$\frac{2}{3} + \frac{3}{4} = \frac{8}{12} + \frac{9}{12} = \frac{8+9}{12} = \frac{17}{12}$