The answer to the question of the correct answer in the box. For the expression (-11\2x + 3) - 2 (-11/4x - 5/2) =
The answer is 8
Proof
The two easiest ways to solve a system of equations (in my opinion) are to add the equations together while getting rid of a variable, or solving for a variable in one equation and plugging it into another. The latter is the method I will use.
3x - y = 4 (solve for y)
3x = 4 + y
3x - 4 = y
y = <span>3x - 4 </span>
Now we can plug y into the other equation:
<span>6x + 3y = 13
</span>6x + 3(<span>3x - 4) = 13
</span>6x + 9<span>x - 12 = 13
</span>15x = 25
x = 25/15
x = 5/3
The answer is x = 5/3
If you ever needed to find y as well, you can plug this into either equation to find y.
3x - y = 4
<span>3(5/3) - y = 4
</span>5 - y = 4
y = 1
144 = 12^2
121 = 11^2
so root(130) is between 11 and 12, so is about 11.4 on the number line.
hope this helps :)
It is the same as commutative, just flipping the position of the numbers. For multiplication, it is the same. 3x2=2x3. But with division, you are dividing the second number from the first, so it matters what number is first and can affect it heavily.
Answer:
None
Step-by-step explanation:
You have not given us a picture or problem four.
