What's the solution?

\[ x + 2y = -2 \]

\[ 2x - 4y = 0 \]

x+2y=-2 2x-4y=0
multiply the first equation by 2 2x+4y=-4 add this to the first equation 2x+2x-4y+4y=0-4 add like terms 4x=-4 divide both sides by 4 x=-1 subtitue into 1st equation -1+2y=-2 add 1 to both sides 2y=-1 divide both sides by 2 y=-1/2
another way is since 2x-4y=0 so 2x must equal 4y subtitue and get answer

Answered by apologiabiology | 2024-06-10

1.Let's solve for x . x+ 2y = −2 Step 1: Add -2y to both sides. x+ 2y + − 2y = −2 + − 2y x= − 2y −2 Answer: x= − 2y − 2
2. Let's solve for x. 2x − 4y =0 Step 1: Add 4y to both sides. 2x − 4y + 4y = 0+ 4y 2x = 4y Step 2: Divide both sides by 2. 2x/ 2 = 4y/ 2
x= 2y Answer: x= 2 y

Answered by makeitnasty | 2024-06-10

The solution to the given system of equations is ( x , y ) = ( − 1 , − 2 1 ​ ) . This was determined by solving the second equation for x and substituting into the first equation. Both original equations were verified with the found values.
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Answered by apologiabiology | 2024-12-26