(750+45)/(20-5)如何简便计算

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(750+45)/(20-5)如何简便计算

(750+45)/(20-5)如何简便计算
(750+45)/(20-5)如何简便计算

(750+45)/(20-5)如何简便计算
(750+45)/(20-5)
=(750+45)÷15
=750÷15+45÷15
=50+3
=53

(750+45)/(20-5)
=(750+45)/15
=750/15+45/15
=50+3
=53

=795÷15
=(800-5)÷15
=160/3-1/3
=159/3
=53

先约分分子分母同时除以5
=(150+9)/(4-1)
=(150+9)/3
=50+3
=53