Question

01- calcule as expressões matemáticas:

a)-2+5{8+(20+5)-[3+10]=

b){[6+10-(1-5)+20]}=

c)90-4+[8-6]-10+(23+5)+9= ​

Answer 1

Resposta:

01- a) 98

b) 40

c) 135

Explicação:

01- a)-2+5×{8+(20+5)-[3+10]} =

-2+5×{8+25-[3+10]} =

-2+5×{8+25-13} =

-2+5×{33-13} =

-2+5×20 =

-2+100 =

98

b){[6+10-(1-5)+20]} =

{[6+10-(-4)+20]} =

{[6+10+4+20]} =

{[16+4+20]} =

{[20+20]}

40

c)90-4+[8-6]-10+(23+5)+9 =

90-4+[8-6]-10+28+9 =

90-4+2-10+28+9 =

86+2-10+28+9 =

88-10+28+9 =

98+28+9 =

126+9 =

135

Answer 2

Explicação passo-a-passo:

-2+5{8+(20+5)-[3+10]}

-2+5{8+25-[3+10]}

-2+5{33-[3+10]}

-2+5{33-13}

-2+5*20

-2+100

98

{[6+10-(1-5)+20]}

{[6+10-(-4)+20]}

{[6+10+4+20]}

16+4+20

20+20

40

90-4+[8-6]-10+(23+5)+9

90-4+2-10+28+9

86+2-10+28+9

88-10+28+9

78+28+9

106+9

115