Question

350cm- dm = 2m cat ie raspunsu ??

Answer 1

$350 \ cm-? \ dm=2 \ m \\ 350 \ cm=35 \ dm \\ 2 \ m=20 \ dm \\ \Rightarrow 35 \ dm-? \ dm=20 \ dm \\ \Rightarrow 35 \ dm-20 \ dm=\boxed{15 \ dm}.$

Answer 2

350cm-x=2m
⇒350cm=3,5m;
⇒3,5m-x=2m
⇒x=3,5m-2m
⇒x=1,5m⇒1,5m=15dm;