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lord [1]
3 years ago
6

(8-9)-(9+3)*5 5+(5+5+6)+9 (5/3-3) 2*3+(4*2)/2

Mathematics
1 answer:
Fynjy0 [20]3 years ago
4 0

Answer:

Step-by-step explanation:

Next time, please include the instructions.  I am assuming that the instructions state, "evaluate the following."

a) (8-9)-(9+3)*5  According to order of operations rules, we must do any work inside parentheses first, followed by any multiplication or division.  Here we calculate 8-9, obtaining -1, and 9+3, obtaining 12.  Then we have:

(-1) - (12)*5.  We must multiply here before subtracting:  -60 - 1 = -61.

b)  5+(5+5+6)+9    Do the addition inside parentheses first, obtaining:

5+(16)+9.  Now add up 5, 16 and 9:    30.

c) (5/3-3)    Do the division first, obtaining 5/3, and then subtract 3 (or, using the LCD, subtract 9/3):  5/3 - 9/3 = -4/3

d) 2*3+(4*2)/2  Do the multiplication first:  6 + (8)/2

Next, do the division:  6 + (4) = 10

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What is n in 3/5n + 15 =10+2/5n
Phantasy [73]
Simplify both sides of the equation.

<span><span><span><span>3/5</span>n </span>+ 15 </span>= <span><span><span>2/5</span>n </span>+ 10


</span></span>Subtract 2/5n from both sides.

<span><span><span><span><span>3/5</span>n </span>+ 15 - </span><span><span>2/5</span>n </span></span>= <span><span><span><span>2/5</span>n </span>+ 10 - </span><span><span>2/5</span>n</span></span></span><span><span><span><span>15</span>n </span>+ 15 </span>= 10


</span>Subtract 15 from both sides.

<span><span><span><span><span>1/5</span>n </span>+ 15 - </span>15 </span>= <span>10 - 15</span></span><span><span><span>1/5</span>n </span>= -<span>5


</span></span>Multiply both sides by 5.

<span><span>5 </span></span>× (1/5n) = (5) × (−5)<span>n = -<span><span>25


Answer: n is -25.</span></span></span>
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