18 is the least common denominator of all the fractions, so you can eliminate fractions by multiplying the equation by 18.
(4.5*18)x +((7/9)*18)x + (2 1/3)*18 + ((1/6)*18)x = (5 1/18)*18
81x +14x +42 +3x = 91 . . . . . simplify
Collect terms.
98x + 42 = 91
98x = 49 . . . . . . . . . subtract 42
x = 49/98 = 1/2
The solution is x = 1/2.
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You can also do the arithmetic with mixed numbers and fractions. The usual methods apply.
(4.5 + 7/9 + 1/6)x + 2 1/3 = 5 1/18
(49/9)x + 7/3 = 91/18
(49/9)x = 49/18 . . . . . . . subtract 7/3
x = (9/49)(49/18) = 9/18 = 1/2 . . . . . multiply by 9/49
This can be a little more tedious than the method above, but it works and it will give you the right answer. A calculator that works with fractions can make this solution as easy as the other one.
Answer follow this link and it will give you the answer and a step by step good luck https://www.algebra.com/algebra/homework/word/numbers/Numbers_Word_Problems.faq.question.227128.html
The division property of exponents only applies when the two powers have the same base.
The second one, and the two last should be the right answer,
Hope this helped:)
Answer:
28
Step-by-step explanation:
Plug in 2 for x and 3 for y.
6(2) + 7(3) - 5 =
12 + 21 - 5 =
33 - 5 =
28
