Let z = 5 – 9i and w = 6 + i. Which expression shows the first step in finding the quotient of StartFraction z Over w EndFraction ?

A on Edge 2020
5-9i/6+i times 6-i/6-i

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

the answer is (-4,-4)

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