Start by expanding the left side of the equation: -2(4x-7) is equal to -8x + 14.
This brings you to -8x+14 = -8x + 14.
Now add 8x to both sides. This brings you to 14 = 14
Now subtract 14 from both sides. This brings you to 0 = 0.
Thus your answer is 0 = 0, which is a true statement.
Hope this helps.
Can you upload a picture of the graphs?
Answer:
Step-by-step explanation:
Equation 1:
Equation 2:
Subtract 3b from both sides in Equation 1:
Divide both sides by 2:
Substitute this into Equation 2:
Add 2 to both sides:
Divide both sides by -4:
We know that . Plug in b = -7 value:
The better deal is the 16 ounces for 79 cents because it is 5 cents an ounce
while the 32 ounce bag is 11 cents an ounce