Question

resolva as expressões numéricas: a) -[-1+(-5+1)•(-1+5)]. b) [-3+(-4-2•3):(-5)]. c){(-2)•[+3-5•(-3-2)-2•(-1+3)]}. d) {3+[-5+(-9)•(+3)]:(-7+5)}​

Answer 1

Resposta:

A) [-1+(-5+1)•(-1+5)]

[-1+(-4)•4]

[-1+(-16)]

-17

B)[-3+(-4-2•3):(-5)]

[-3+(-4-6)÷(-5)]

[-3+2÷(-5)]

[-3+(-0,4)]

-3,4

C){(-2)•[+3-5•(-3-2)-2•(-1+3)]}

{(-2)•[+3-5•(-5)-2•2]}

{(-2)•[+3-(-25)-4]}

{(-2)•24}

-48

D){3+[-5+(-9)•(+3)]:(-7+5)}

{3+[-5+(-9)•(+3)]:2}

{3+[-5+(-27)]:2}

{3+(-32):2}

{3+(-16)}

-13