Question

resolva as expressões numéricas​

Answer 1

3-7•3
+3-21
-18

5+2•8
5+16
21

30+8:(-2)
30-4
26

15:5-10
3-10
-7

3+6•2-15:(-3)
3+12+5
15+5
20

{4-[2.(8-12)]:2}
{4-[2.(-4)]:2}
{4-[-8]:2}
{4+8:2}
{4+4}
=8

{2+[3:(10-11)+1]:2}
{2+[3:(-1)+1]:2}
{2+[-3+1]:2}
{2+[-2]:2}
{2-2:2}
{2-1}
=1