Question

resolva as expressões numéricas :
a) 5×(64-12÷3) =
b) 480÷{20×[86-12 ×(5+2)]} =​

Answer 1

a) 5×(64-12÷3)

5×(64- 4)

5×60

300

b) 480÷{20×[86-12 ×(5+2)]}

480 ÷{20×[86-12 ×7]}

480 ÷{20×[86- 84]}

480 ÷{20× 2 }

480 ÷ 40

12