Question

3x + 3y = 10
-9 - 9 = -30
What is the solution of the following system?

Answer 1

Answer:First x=−y+103

Second −9−9=?−30

−18≠−30

False

Explanation:

3x+3y=10

Step 1: Add -3y to both sides.

3x+3y+−3y=10+−3y

3x=−3y+10

Step 2: Divide both sides by 3.

3x3=−3y+103

x=−y+103

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Answer 2

1.
`x = (10)/(3) - y` 2. False

Explanation:

We have two equations

1.
`3x + 3y = 10\\`

2.
`-9 - 9 = -30`

Taking equation No 1

`3x + 3y = 10\\Dividing\ both\ sides\ by\ 3\ we\ get\\(3x)/(3) + (3y)/(3) = (10)/(3)   \\x + y = (10)/(3) \\Now\ subtracting\ y\ from\ both\ sides\ we\ get\\\\x + y - y =  10/3 - y\\x = 10/3 -y`

For equation no 2

-9 -9 = -30

-18 = -30 which is not true