Answer:
The values of x and y are x = -3 and y = -2
Step-by-step explanation:
In the complex numbers if a + bi = c + di, then the real parts are equal and the imaginary parts are equal
Let us use this rule to solve the question
∵ -21 + 5yi = 7x - 10i
∴ The real parts are -21 and 7x
∴ The imaginary parts are 5y and -10
∵ The real parts are equal
∴ 7x = -21
→ Divide both sides by 7
∴
= 
∴ x = -3
∵ The imaginary parts are equal
∴ 5y = -10
→ Divide both sides by 5
∴
= 
∴ y = -2
∴ The values of x and y are x = -3 and y = -2
Answer:
a
Step-by-step explanation:
Answer:
the answer is 2/9.
Step-by-step explanation:
8/9÷4
= 8/9 × 1/4
= 8/36
=2/9
Minus 2 from bothsides
f-2=3g
divide both sides by 3
(f-2)/3=g
g=(f-2)/3
Answer:
The answer is the fourth option, 5.