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2. which equation is equivalent to -3x+y=5
y=5 - 3x
y=-3x -5 *
y=5+3x
y=3x-5


3. -5x+5= -40?
-15
9 *
7
-65
* is my answer

1 Answer

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Question 1:

For this case we must rewrite the following equation:


-3x + y = 5

If we add 3x to both sides of the equation we have:


y = 5 + 3x

Thus, we have that an equivalent expression is option C.

Answer:

Option C


y = 5 + 3x

Question 2:

For this case we must solve the following equation:


-5x + 5 = -40

Subtracting 5 from both sides of the equation we have:


-5x = -40-5\\-5x = -45

Dividing between -5 on both sides of the equation we have:


x = \frac {-45} {- 5}\\x = 9

Answer:

Option B

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