What is the missing step in solving the inequality 5 – 8x < 2x + 3?
2 answers:
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Answer:
Step-by-step explanation:
Step 1: Factor out the common term
Step 2: Add the whole numbers
Step 3: Combine the fractions:
Step 4: Convert the improper fractions to mixed numbers
Step 5: Add the numbers
Therefore, the answer to the equation is in fraction, and decimal;
Let p be the prize of a pen and m the prize of a mechanical pencils. If you buy six pens and one mechanical pencil, you spend 6p+m. We know that this equals 9, because you get 1$ change from a 10$ bill.
Similarly, if you buy four pens and two mechanical pencils, you spend 4p+2m, which is 8$, because now you get a $2 change. Put these equation together in a system:
Now, if you multiply the first equation by 2, the system becomes
Subtract the second equation from the first:
Plug this value into the first equation to get