What is the answer to 4x-2=22-8x
2 answers:
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Answer:
a.
b.
c. Sarah has 3 nickels and 5 quarters
Sep-by-step explanation:
Given
Coins = 8
Worth = $1.40
Solving (a): Equation relating to number of coins
From the question, we understand that
q = quarters
n = nickels
The required equation is:
Solving (b): Equation relating to worth of coins
So, the equation is
Solving (c): Values of q and n
<em>Make n the subject of formula in (a)</em>
Substitute 8 - q for n in (b)
Collect Like Terms
Make q the subject of formula
Substitute 5 for q in
Hence;
<em>Sarah has 3 nickels and 5 quarters</em>