Question

a supra 3=b supra4=5,atunci suma a+b este egala cu...

Answer 1

a/3=b/4=5
a/3=5 rezulta ca a=5*3=15
b/4=5 rezulta ca b=5*4=20
a+b=15+20=35

Answer 2

$\frac{a}{3} = \frac{b}{4}=5$⇒$\left \{ {{a=15} \atop {b=20}} \right.$⇒a+b=15+20=35