Final answer:
To find x and y in the given equations, you need to isolate the variables. In each equation, perform the operations necessary to isolate the variable.
Step-by-step explanation:
To find the values of x and y in the given equations:
a) 3r - 16 = 0:
To find the value of r, you need to isolate r. Add 16 to both sides of the equation to get 3r = 16. Then, divide both sides of the equation by 3 to find r = 16/3.
b) lly - 32 = 0:
To find the value of ly, you need to isolate ly. Add 32 to both sides of the equation to get lly = 32. Then, divide both sides of the equation by l to find ly = 32/l.
c) 5x + 7 = 0:
To find the value of x, you need to isolate x. Subtract 7 from both sides of the equation to get 5x = -7. Then, divide both sides of the equation by 5 to find x = -7/5.