Question

In which step was an error made?

In step 1, the multiplier should be -7.
in step 2. the x-variable should be eliminated when
the equations are added together
Review the steps for solving the system
-3x - 5y = 1
- -/- 2 - 3 - 4 = 3
Multiply the second equation by 7 to get x + 5y = 21
Add the equations together to get –2x+= 22.
Solve for x to find x=-11.
Substitute x into an equation to find y
In step 3. both sides of the equation should be
multiplied by -2 rather than divided by-2.
In step 4. substituting x= -11 into the first equation
does not yield a value of 2 for y.
*i added the picture if what my phone typed didn’t make sense*

Answer 1

In step 2, she substituted the x values for y and the y values for x

Step-by-step explanation

just had this question.

Answer 2

Answer:
Step 1

Step-by-step explanation:
In step 1 it states that the second equation is multiplied by 7 to get x+5y=21. The second equation is:
-(1/7)x-(5/7)y=3
When multiplied by 7, this equation becomes -x-5y=21, not x+5y=21. The error was made because -7 was multiplied to the left side of the equation instead of 7. So, step 1 was where the error was made.