Question

5个7加上运算符号怎样算得数分别等于三四五六七八九十

Answer 1

（7+7）÷7+7÷7=3
7 -（7+7+7）÷7=4
7-7÷7-7÷7=5
7-7x7÷7÷7=6
7+7+7-7-7=7
7+7x7÷7÷7=8
7+7÷7+7÷7=9
7+（7+7+7）÷7=10

Answer 2

(7+7)÷7+7÷7=3
7-(7+7+7)÷7=4
7-7÷7-7÷7=5

追答

7×7÷7-7÷7=6
7×7×7÷7÷7=7
7×7÷7+7÷7=8
7÷7+7÷7+7=9
7+(7+7+7)÷7=10

(7+7)÷7+7÷7
=2+1
=3
7-(7+7+7)÷7
=7-3
=4
7-7÷7-7÷7
=7-1-1
=5
7×7÷7-7÷7
=7-1
=6
7×7×7÷7÷7
=7
7×7÷7+7÷7
=7+1
=8
7÷7+7÷7+7
=1+1+7
=9
7+(7+7+7)÷7
=7+3
=10

满意请采纳哦！

(7+7)÷7-7÷7
=2-1
=1
(7+7)÷7×7÷7
=2×7÷7
=2

Answer 3

7/7+（7+7）/7=3
（7+7+7+7）/7=4
7-7/7-7/7=5
（7-7/7）x7/7=6
（7x7-7-7）/7=7
7x7/7+7/7=8
7/7+7/7+7=9
7+（7+7+7）/7=10
采纳哟。