Question

1/  37.5x2.5+12.4:0.4

2/ 66x31+66x24+66x17+34x72

Answer 1

2/ =66x(31+24+17)+34x72

=66x72+34x72

=(66+34)x72

=100x72

=7200

Answer 2

Mình mò đc câu 2 r. Ai giúp câu 1 vs... Tkiu ae

Answer 3

1/  37.5x2.5+12.4:0.4

= 37.5 x2.5 + 12.4 x2.5

= ( 37.5+12.4) x 2.5

= 49.9 x 2.5

=124.75