解:75×48-150×22等于( 300 )
∵已知需求出75×48-150×22等于多少
X × Y - X × Z = X × (Y - Z)
∴75 × 48 - 150 × 22
= 75 × (2 × 24)- 150 × 22
= 75 × 2 × 24 - 150 × 22
= 150 × 24 - 150 × 22
= 150 × (24 - 22)
= 150 × 2
= 300
答:75×48-150×22等于300
75×48-150×22
=75X(48-2X22)
=75X4
=300