你好,通分是把分母化成相同的数.
5/12 + 5/4 -1/3
= 5/12 + 15/12 - 4/12
= (5+15-4)/12
= 16/12
=4/3
请采纳!
解:5/12加5/4减1/3等于( 4/3 )
∵已知需求出5/12加5/4减1/3等于多少
∴5/12加5/4减1/3
= 5/12 + 5/4 - 1/3
= 5/12 + (5×3)/(4×3)-(1×4)/(3×4)
= 5/12 + 15/12 - 4/12
= 20/12 - 4/12
= 16/12
= 4/3
答:5/12加5/4减1/3等于4/3
先给这三个数的分母通分,则
5/12+5/4-1/3=5/12+15/12-4/12=16/12=4/3
5/12+5/4-1/3
=5/12+(5×3)/(4×3)-(1×4)/(3×4)
=5/12+15/12-4/12
=20/12-4/12
=16/12
=4/3
=1 1/3