7⼀12÷括号1⼀2+2⼀3括号乘2⼀5用递等式计算,能简算的要简算

7/12÷括号1/2+2/3括号乘2/5用递等式计算,能简算的要简算
2024-12-01 10:38:26
推荐回答(1个)
回答1:

7/12÷括号1/2+2/3括号乘2/5
=7/12÷(3/6+4/6)x2/5
=7/12÷7/6x2/5
=7/12x6/7x2/5
=1/2x2/5
=1/5