...................................................................................................................help

Mathematics

1 answer:

morpeh [17]3 years ago

4 0

Answer:

$4 \frac{7}{72}$

Step-by-step explanation:

$18 \frac{7}{8} - 14 \frac{7}{9} =\\\\18 \frac{63}{72} - 14 \frac{56}{72} \\\\18 \frac{63}{72} = \frac{1359}{72} \\\\14 \frac{56}{72} = \frac{1064}{72}\\ \\\frac{1359}{72} - \frac{1064}{72} = \frac{295}{72}\\\\4 \frac{7}{72}$

You might be interested in

sandy has several pichters.2 pitchers hold 64 ounces each and 4 pichers hold 48 ounces each.how mant ounces can sandys pitcher h

vfiekz [6]

To answer this question you you start by writing the equation. (2*64)+(4*48)= Next, you answer the first parenthesis: 2 times 64... this is 128....now you have 128+(4*48)=... now you answer the next set of parenthesis.... 4 times 48....this is 192...now you have 128+192=.....this is 320...............So the answer to your question is sandys pitcher can hold 320 ounces alltogether.

6 0

4 years ago

Is -8-2(3+2n)+7n equivalent to -30-13n. Explain why or why not.

seropon [69]

No, -8 - 2(3 + 2n) + 7n is not equivalent to -30 - 13n

Step-by-step explanation:

Let us revise the operation of the negative and positive numbers

(-) + (-) = (-)
(-) × (-) = (+)
(-) + (+) = the sign of greatest [(-) if the greatest is (-) or (+) if the greatest is (+)]
(-) × (+) = (-)
(-) - (+) = (-)
(+) - (-) = (+)

∵ The expression is -8 - 2(3 + 2n) + 7n

- Simplify it

∵ 2(3 + 2n) = 2(3) + 2(2n) = 6 + 4n

∴ -8 - 2(3 + 2n) + 7n = -8 - (6 + 4n) + 7n

- Multiply the bracket by (-)

∴ -8 - (6 + 4n) + 7n = -8 - 6 - 4n + 7n

- Add the like terms

∴ -8 - (6 + 4n) + 7n = (-8 - 6) - 4n + 7n

∴ -8 - (6 + 4n) + 7n = -14 + 3n

∴ -8 - 2(3 + 2n) + 7n is equivalent to -14 + 3n

∵ -14 + 3n ≠ -30 - 13n

∴ -8 - 2(3 + 2n) + 7n is not equivalent to -30 - 13n