Question

COMO SUMAR 7/20+3/40+1/80+3/15

Answer 1

Resolver.

$\frac{7}{20} + \frac{3}{40} + \frac{1}{80} + \frac{3}{15}$

$\frac{7*4}{20*4} + \frac{3*2}{40*2} + \frac{1}{80} + \frac{3}{15}$

$\frac{28}{80} + \frac{6}{80} + \frac{1}{80} + \frac{3}{15}$

$\frac{28+6+1}{20}+ \frac{3}{15}$

$\frac{35}{20} + \frac{3}{15}$

$\frac{(35)(15)+(20)(3)}{20*15}$

$\frac{525+60}{300}$

$\frac{585:5}{300:5}$

$\frac{117:3}{60:3}$}

$\frac{39}{20}$