Question

3 * 15 + 3 * 15

6 * 50+ 12* 50

Answer 1

\(\frac{3x15+3x15}{6x50+12x50}=\frac{30+30}{300+600}=\frac{60}{900}=\frac{1}{15}\)

k nha Mai Hà Chi

Answer 2

3x15 + 3x15 = 3x15 = 45

6x50 + 12x50 = 50x (6+12) = 900

k nha bn

Answer 3

3*15+3*15

=15*(3+3)

=15*6

=90

6*50+12*50

=50*(6+12)

=50*18

=900

Answer 4

bằng 1/15

Answer 5

3x15+3x15=45+45=90

6x50+12x50=300+600=900