N+(13−n)÷5 for n=3 ; =

2. 3x+x÷3 for x=12
; =

3. 2xy +x2, when x=3, y=5
; =

4. 1+3(m2−20) when m=5
; =

5. 3x2, when x=4
; =

6. (3x)2, when x=4
; =

hello :

70y^8 + 30y^6 = 2 ( 35 y^8 + 15y^6)

the lenght is : 35 y^8

the width is : 15y^6

77

step-by-step explanation:

t= half of the arc subtended by t.

r= half of the arc subtended by r.  

t+r= half of the arc subtended by t + half of the arc subtended by r= half of 360=180

step-by-step explanation: