A 10 pound sack of flour costs $8 how much does 1 pound of flour cost?
1 answer:
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Answer:
hello there,
the answer for this equation is:
The value of Start Fraction 6 Over x End Fraction + 2x2, when x = 3 is 20.
Step-by-step explanation:
:
There is actually 2 ways to solve this, I will show you both.
The first is obvious, solve for x in the first one, and plug it into the 2nd one and get the answer
4x + 7 = 12
4x = 5
x =
8() + 3
2 * 5 + 3
10 + 3
13
The 2nd option is to manipulate the 4x + 7 to be 8x + 3
4x + 7 = 12
start by moving the 7 over
4x = 5
multiply both sides by 2
8x = 10
and add 3 to both sides
8x + 3 = 13