Help this is geometry

5) 35

6) 24

7) 28

8) 67

9) 20

10) 11

11) 7

12) 21

Step-by-step explanation:

Looks like you get most of the rules involved so I'll just write the steps

5) x+4x+5 = 180

5x + 5 = 180

5x = 175

x = 35

6) 6x = 144

x = 24

7) x+27 = 2x-1

27 = x-1

28 = x

8) 63+2x-17 = 180

2x + 46 = 180

2x = 134

x = 67

9) 9x-28 = 7x +12

2x = 40

x = 20

10) 5x+7 = 62

5x=55

x=11

11) 41=7x-8]49=7x

7=x

12) 114=6x-12

126=6x

21 = x

If you wanna check it just plug in the values

That's about it

x = 3 ± √(5+y)