Question

resolva as seguintes expressoes numericas

Answer 1

a) 12×3+15+5
=36+15+5
=36+20
=56.

b)(40-25)+3+7×5
=(15)+3+35
=15+3+35
=15+38
=53.

c)(12-5)×(12+5)-17
=(7)×(17)-17
=7×17-17
=119-17
=112.