y = 11/21
To solve this first evaluate the power (then calculate the sum):
[tex]4^{2}[/tex]y - [tex]3^{2}[/tex] = 5y + (-5 + 7)
16y - 9 = -5y + 2
Next Move terms (move variable to the left side and change its sign) (Move constant to the right side and change its sign):
16y - 9 = -5y + 2
16y + 5y = 2 + 9
Next Collect the like terms and calculate the sum:
16y + 5y = 2 + 9
21y = 11
Lastly divide both sides of the equation by 21:
21y = 11
y = [tex]\frac{11}{21}[/tex]
