Step-by-step explanation:
Q9. 5n + 8 = 43
5n = 43 - 8
5n = 35
n = 35/5
n = 7
Q10. y/6 - 7 = 4
y/6 = 4 + 7
y/6 = 11
y = 11×6
y = 66
Q11. 8w - 15 = 57
8w = 57 + 15
8w = 72
w = 72/8
w = 9
Q12. g/3 + 11 = 25
g/3 = 25 - 11
g/3 = 14
g = 14×3
g = 42
Q13. f/5 - 22 = -25
f/5 = -25 + 22
f/5 = -3
f = -3×5
f = -15
Q14. -4p + 19 = 11
4p = 19 - 11
4p = 8
p = 8/4
p= 2
