A common multiple between 5 and 9 is 45.
Answer:
<u><em>-x+2y=6 and x+3y=0</em></u>
Step-by-step explanation:
Ax+By=C
y=1/2 x+ 3
y= x+6/2
2y=x+6
-x+2y=6------------1
y-2=-1/3(x+6)
3(y-2)= -(x+6)
3y-6=-x-6
3y+x=-6+6
x+3y=0------------2
15 cubed=3*3*3*5*5*5
21 squared =3*3*7*7
GCF=3*3=9
The numbers are 105 and 50
<em><u>Solution:</u></em>
Let "x" be the first number
Let "y' be the second number
Twice a number plus twice a second number is 310
Therefore,
twice of x + twice of y = 310
2x + 2y = 310 ---------- eqn 1
The difference between the numbers is 55
x - y = 55 -------- eqn 2
<em><u>Let us solve eqn 1 and eqn 2</u></em>
From eqn 2,
x = 55 + y ------ eqn 3
<em><u>Substitute eqn 3 in eqn 1</u></em>
2(55 + y) + 2y = 310
110 + 2y + 2y = 310
4y = 310 - 110
4y = 200
<h3>y = 50</h3>
<em><u>Substitute y = 50 in eqn 3</u></em>
x = 55 + 50
<h3>x = 105</h3>
Thus the numbers are 105 and 50
The answer is A
3-4/(-5)-6= -1/-11 which would be 1/11