Question

Tinh nhanh:

28x(231+69)+72x(231+69)

Answer 1

28 x (231+69)+72 x (231+69)

=28 x 300+72 x 300

=(28+72) x 300

=100 x 300

=30000

Answer 2

\(=28x300+72x300=300x\left(28+72\right)=300x100=30000\)

Answer 3

28 x (231 + 69) + 72 x (231 + 69)

= (231 + 69) x ( 28 + 72)

= 300 x 100

= 30000

(Nhớ k cho mình với nhoa!)

Answer 4

 28X(231+69)+72X(231+69)

=28X300+72X300

=(28+72)X300

=100X300

=30000

nhớ nhé

Answer 5

28X(231+69)+72X(231+69)

=28X300+72X300

=(28+72)X300

=100X300

=30000

nhé

Answer 6

28 x ( 231 + 69 ) + 72 x ( 231 + 69 )

= 28 x 300 + 72 x 300

= ( 28 + 72) x 300

= 100 x 300

= 30000