2x + 4y = 14
4x + y = 20......multiply by -4
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2x + 4y = 14
-16x - 4y = -80 (result of multiplying by -4)
---------------add
-14x = -66....as u can see, ur y's cancel out
so ur answer is : 1st answer choice <==
** and just so u know, u could have multiplied the 1st equation by -2, and it would have cancelled out ur x's
<h3>
Answer:</h3>
x=30
<h3>
Solution:</h3>
- First, use the distributive property:
- 8x-3(2x-4)=3(x-6)
- 8x-6x+12=3x-18
- Simplify:
- 2x+12=3x-18
- 2x-3x=-12-18
- -x=-30
- x=30
Hope it helps.
Do comment if you have any query.
9 students
30% ends up being .3%, multiply .3% by 30 students which equals 9.
Answer:
C
Step-by-step explanation:
The quotient is 18
