Question

a x 10 + a x 20 = 40

Answer 1

A x 10+A x 20=40

=A x(10+20)=40

=A x 30=40

= 40:30

=1 (dư 10)

Answer 2

a x 10 + a x 20

= a x ( 20 + 10 )

= a x 30

Answer 3

a x 10 + a x 20 

= a x ( 10 + 20 )

= a x 30

Answer 4

\(a.10+a.20\)

\(=a.\left(10+20\right)\)

\(=a.30\)

\(=30a\)

good luck hồ hiền mai

 

Answer 5

Ax30 . h cho mk nhe

Answer 6

\(a\times10+a\times20=40\)

   \(a\times\left(10+20\right)=40\)

                    \(a\times30=40\)

                               \(a=40:30\)

                                \(a=\frac{4}{3}\)

k cho tớ nha bn