2 câu trả lời
70 x 939 + 61 x 135 - 61 x 65
= 70 x 939 + 61 x ( 135 - 65 )
= 70 x 939 + 61 x 70
= 70 x ( 939 + 61)
= 70 x 1000
= 70000
70x939+61x135-61x65
=70x939+61x(135-65)
=70x939+61x70
=70x(939+61)
=70x1000
=70000
70 x 939 + 61 x 135 - 61 x 65
= 70 x 939 + 61 x ( 135 - 65 )
= 70 x 939 + 61 x 70
= 70 x ( 939 + 61)
= 70 x 1000
= 70000
70x939+61x135-61x65
=70x939+61x(135-65)
=70x939+61x70
=70x(939+61)
=70x1000
=70000