2 answers:
Solve for one of the variables in the first equation (in this case, I will solve for X):
X = Y + 3
Then use that value of X in the second equation to solve for Y:
X + 3Y = 9
(Y + 3) + 3Y = 9
4Y + 3 = 9
4Y = 6
Y = 1.5
Use the value of Y we just found in the X equation we created:
X = Y + 3
X = 1.5 + 3
X = 4.5
Therefore X = 4.5 or 9/2 and Y = 1.5 or 3/2.
<span>X - y = 3 is the same as x=3+y </span>
<span>
3+y+3y = 9 </span>
<span>
3+4y=9 </span>
<span>
4y=9-3
</span>
<span>4y=6
</span>
<span>y=6/4
</span>
<span>y=3/2 </span>
<span>
x-(3/2)=3 </span>
<span>
x=3+(3/2) </span>
<span>
x=6/2+3/2 </span>
<span>
x=9/2</span>
You might be interested in
Answer:
Step-by-step explanation:
A and D = 20
C and B = 160
160 +160 +20 +20 =360
The Answer to this problem is (the line y=x). I'm positive that this is the right answer!!!
Answer:
A and E are correct congruence statements.
<span>y+3=2(x-1)
a point or ordered pair (1, -3)
slope = 2
hope it helps</span>
