Insert () into the equation to make each number sentence correct.
7 x 4 - 2 + 1 = 21...
![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 21.10.2019 13:40, samehajamal1234567
Insert () into the equation to make each number sentence correct.
7 x 4 - 2 + 1 = 21
![answer](/tpl/images/cats/otvet.png)
Answers: 2
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