2y-x=-3
x+2y=7
(399+143/2)/400%
$\sqrt{\Box}$
...
3 $\sqrt{\Box}$ 346 - $\sqrt{\Box}$ 25
xy+3y
4x+12
2-6×4÷5+6÷7-2×10
√x=-25 find x?
1980841
161669.4711
.1980841
22398123
4437239 .3539
.23398123
2.97772207305101720
1.07813839233...
−3
5
×
2
9
+
−2
1
−
8
