Question

5) x+2y+3i=3+(2x-y)i
6) 7x+(x-3y)i=3y+9i

help me find x and y

Answer 1

question 5)
hint:
please you have to solve this system:
\[\begin{gathered}
x + 2y = 3 \hfill \\
3 = 2x - y \hfill \\
\end{gathered} \]

Answer 2

don't know how elimination works :/ i'm stuck in that part

Answer 3

please try to use the substitution method

Answer 4

for example from the first equation I get
x= 3-2y
then I substitute into the second equation, so I can write:
3 = 2(3-2y) - y
now please solve that equation for y

Answer 5

y=3/5?

Answer 6

that's right!

Answer 7

so please substitute y into the equation
x = 3 -2y,
what do you get?

Answer 8

hint:
x = 3 - 2*(3/5) = ...?

Answer 9

x=3/5

Answer 10

\[x = 3 - 2 \cdot \frac{3}{5} = 3 - \frac{6}{5} = ...?\]

Answer 11

hint:
\[x = 3 - 2 \cdot \frac{3}{5} = 3 - \frac{6}{5} = \frac{{15 - 6}}{5} = ...?\]

Answer 12

9/5

Answer 13

perfect!

Answer 14

question 6)
hint:
here, please you have to solve this system:
\[\begin{gathered}
7x = 3y \hfill \\
x - 3y = 9 \hfill \\
\end{gathered} \]

Answer 15

wait :)

Answer 16

@Michele_Laino y=63/18 x=3/2?

Answer 17

please I'm checking your answer

Answer 18

I got:
y= - 7/2, and x= - 3/2