Question

Me ajudem por favor na 2 e 3

Answer 1

Explicação passo-a-passo:

1) a)237+98=335

b)648+2334=2982

c)256-84=172

d)2711-348=2363

2) a)10-1+8-4= 18-5=13

b)12-8+9-3= 21-11=10

c)25-1-4-7=25-12=13

3)a)30-(5+3)=30-8=22

b)15+(8+2)=15+10=25

c)25-[10+(7-4)]=25-(10+3)=25-13=12

d)32+[10-(9-4)+8]=32+(10-5+8)=32+13=45

e)25+{12+[2-(8-6)+2]}=25+{12+[2-2+2]}=25+(12+2)=25+14=39