Question

ayúdenme porfis porfavor​

Answer 1

1-R=3

(7×2)=14

(15-4)=11

14-11=3

2-R=30

(10+2)=12

(15+3)=18

12+18=30

3-R=17

(18+3)-(2×3-4)²

4-R=30

3²=3×3=9

9+3=12

12+20=32

√4=4÷2=2

32-2=30