7.5÷2.6+2.7×1.5的简算方法

7.5÷2.6+2.7×1.5的简算方法
2025-06-22 09:49:57
推荐回答(1个)
回答1:

7.5÷2.6+2.7×1.5
=7.5×5/13+0.9×7.5
=7.5×(5/13+9/10)
=15/2×167/130
=501/52
=(520-19)/52
=10-19/52
=9又33/52。