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3 years ago

У = 2х 3х + Зу = -18

Mathematics

2 answers:

eimsori [14]3 years ago

8 0

Step-by-step explanation:

y = 2x

so,

3x + 3y = -18

3(y÷2) + 3y = -18

3y ÷2 + 3y = -18

( 3y + 6y )÷2 = -18

9y ÷2 = -18

9y = -18 ×2

9y = -36

x = y÷2

x = -4÷2

<h2>follow me</h2>

Troyanec [42]3 years ago

3 0

Answer:

x=-2,y=-4

Step-by-step explanation:

Substuting the value of y in second equation.

3x+3×2x=-18

9x=-18

x=-2

putting the value of x in equation 1 ,

y=-4

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