Select the correct combination of mathematical signs that can sequentially replace the * signs and make the equation correct.
68 * 138* 23 * 54 * 20
1
+, ÷, −, =
2
×, +, −, =
3
=, ×, +, ÷
4
×, +, =, ÷
Select the correct combination of mathematical signs that can sequentially replace the * signs and make the equation correct.
68 * 138* 23 * 54 * 20