Answer:
12x+4
Step-by-step explanation:
distribute the 4 to the 3x and 1 so 3*4=12 so 12x 1*4=4
The good option to multiply the top equation by is <u>-4</u>
<h3>
REASON :-</h3>
This is because, when we solve the equations, in the left side of first equation :-
☆ -2 can be multiplied by <em>-4</em><em> </em>to get the value 8 on the left side of second equation.
☆ This can help in easier elimination in the given set of equations.
■ The process is to be done as per the given below way :
![(-4)×-2x - 5y = -1 \\ 8x + 4y = 16](https://tex.z-dn.net/?f=%20%28-4%29%C3%97-2x%20-%205y%20%3D%20-1%20%5C%5C%208x%20%2B%204y%20%3D%2016)
![= > ( - 4 \times - 2)x - 5y = -1 \\ 8x + 4y = 16](https://tex.z-dn.net/?f=%20%20%3D%20%20%3E%20%28%20-%204%20%5Ctimes%20%20-%202%29x%20-%205y%20%3D%20-1%20%5C%5C%208x%20%2B%204y%20%3D%2016)
![= > 8x - 5y = -1 \\ 8x + 4y = 16](https://tex.z-dn.net/?f=%20%3D%20%20%3E%20%208x%20-%205y%20%3D%20-1%20%5C%5C%208x%20%2B%204y%20%3D%2016)
Now the 8x on both equations can be cut.
Answer:
Step-by-step explanation:
ΔXYZ
m∠X = 52°, m∠Y = 106°, m∠Z = 180° - (106° + 52°) = 22°
=
= 0.5
5x+4 + 7x-2 = 134
12x + 2 = 134
12x = 132
x = 11
5x+4
5(11) + 4
55 + 4
59
Your answer is 59