Question

Calcule:
a)20+30-30
b)10+60-30
c)10 + 50 - 20
d) 90 + 10 - 40

Answer 1

Resposta:

$a)20+30-30$

$50-30$

$20$

$b)10+60-30$

$70-30$

$40$

$c)10+50-20$

$60-20$

$40$

$d) 90 + 10 - 40$

$100-40$

$60$