Hi!
<h3>We need to isolate b on one side. </h3>
<em>Multiply by 4 on both sides. </em>
-83 * 4 = b/4 * 4
<u>-332 = b</u>
<h2>The answer is b = -332</h2>
<em>To check your answer, put in the value of b. </em>
-83 = -332/4
-83 = -83
<u>This equation is correct. </u>
Hope this helps! :)
-Peredhel
Answer:
?
Step-by-step explanation:
You need to know how much how much he makes per hour.
There are two equation:
1) From Kim
2) From Daniel
Let:
x be the cost of rolls of plain wrapping paper
y be the cost of rolls of shiny wrapping paper
Kim:
7x + 8y = 140
Daniel:
14x + 7y = 154
<u>Using elimination method:</u>
(7x + 8y = 140) * -2 (Multiplying the equation by -2)
-14x - 16y = -280
-14x -16y = -280
14x + 7y = 154
------------------------------
0x - 9y = -126
9y = 126 (Negative sign cancels from both sides)
y = 126 /9
y = 14
The cost of each shiny wrapping paper is $14.
Now solve x, you pick any two equation to solve for x.
7x + 8y = 140
7x + 8(14) = 140 (You know from above y =14)
7x + 112 = 140
7x = 28
x = 28/7
x = 4
The cost of each plain wrapping paper is $4.
Solution: (4,14)
Answer:
-18
Step-by-step explanation:
Step 1: Substitute your x and y values in
Therefore the answer when x = 2 and y = 3 is -18