Solve the following system using elimination:
{x - 2 y = -23 | (equation 1)
{x - y = 7 | (equation 2)
Subtract equation 1 from equation 2:
{x - 2 y = -23 | (equation 1)
{0 x+y = 30 | (equation 2)
Add 2 × (equation 2) to equation 1:
{x+0 y = 37 | (equation 1)
{0 x+y = 30 | (equation 2)
Collect results:
Answer: {x = 37 , y = 30
Answer: y = 3
Step-by-step explanation: You're given x, find y.
- -2(-3) + 3y = 12 (substitute in for x)
- 6 + 3y = 12 (multiply)
- 3y = 9 (divide both sides by 3)
- 3 = y
Hey there!
<span>The numerator is the top part of the fraction and the
denominator is the bottom part of the fraction. </span>
For example, in the fraction 
, 1 would be the numerator and 2 would be the denominator.
Thank you!
Answer:
Down below
Step-by-step explanation:
inside of a triangle is 180 degrees. first we have to find what the inside of z and y are.
then solve for x
<u>Answer:</u>
False
<u>Step-by-step explanation:</u>
The given statement: 'the order in which you perform operations in a numerical expression does not matter' is absolutely false.
The order or sequence in which a mathematical expression is solved does matter a lot. Performing mathematical operations in a different manner will result in different results.
The rule for performing mathematical operation states that a numerical expression should be solved in the following manner:
1. Brackets
2. Of
3. Division
4. Multiplication
5. Addition
6. Subtraction
