Answer:
Step-by-step explanation:
Given
Represent each friend with the first letter of their name
So:
Substitute: in
Collect like terms
Make D + E the subject in
Substitute in
Collect like terms
Substitute in and
So, we have:
We have:
i.e.
and
For and to be true,
i.e.
So, we have:
Answer:
-8
Step-by-step explanation:
well since the equation has the <em>same base</em> of 11, you can just solve for x as you normally would. so the question becomes:
4x+1 = 3x -7
<em>subtract one from both sides</em>
4x = 3x - 8
<em>subtract 3x from both sides</em>
x = - 8
Answer:
x = 11
y = 3
Step-by-step explanation:
4y+1=6y-5
-4y -4y
+1 =2y-5
+5 +5
6/2=2y/2
3=y
2x-4= 18
+4 +4
2x/2 = 22/2
x=11
Answer:
51
Step-by-step explanation:
<h2>12+18=30</h2><h2>30+21=51</h2>