Question

Calcule o valor das expressões:
a)(7 x 7 + 5) : (18 – 15 : 3 + 5) x 2 b)2 + 30 : 5 + (9 x 6 – 4) : 5 – (40 : 10 + 3) c)6² : (2³ + 1) x (3² - 5)

Answer 1

Resposta:

Calcule o valor das expressões:

a)(7 x 7 + 5) : (18 – 15 : 3 + 5) x 2

$(7*7+5):(18-15:3+5)*2\\(49+5):(18-15:3+5)*2\\(49+5):(18-5+5)*2\\54:(18-5+5)*2\\54:(13+5)*2\\54:18*2\\3*2\\6$

b)2 + 30 : 5 + (9 x 6 – 4) : 5 – (40 : 10 + 3)

$2+30:5+(54-4) : 5-(40:10+3) \\2+30:5+(54-4) : 5-(4+3) \\2+30:5+50:5-(4+3) \\2+30:5+50:5-7 \\2+6+50:5-7 \\2+6+10-7 \\8+10-7 \\18-7\\11$

c)6² : (2³ + 1) x (3² - 5)

$6^{2}:(8+1)*(3^{2}-5) \\6^{2}:(8+1)*(9-5)\\6^{2}:9*(9-5)\\6^{2}:9*4\\36:9*4\\4*4\\16$

Espero ter ajudado, bons estudos e beba água <3