7)123-5 x (x + 2) = 10 8) 35 Xx 10 =60 9) 20-x + 8 = 30-15 + 6 10) 30+Xx (5+2)=40

7)123-5 x (x + 2) = 10

8) 35 Xx 10 =60

9) 20-x + 8 = 30-15 + 6

10) 30+Xx (5+2)=40.