All categories

3 years ago

5x+12-8x=-24 steps by step please

Mathematics

2 answers:

kolezko [41]3 years ago

7 0

Step-by-step explanation:

<h2>=>first combine the like terms</h2>

5x-8x+12=24

-3x+12=24

<h2>=>substruct 12 from 12 and 24</h2>

-3x+12-12=24-12

-3x=12

<h2>=>divide -3 from both side</h2>

-3x/3=12/-3

Veseljchak [2.6K]3 years ago

6 0

Answer is x = 12 :)

Operations you're supposed to do in order to solve this equation are:

1. Combine like terms

2. Subtract 12 from both sides

3. Simplify

4. Divide both sides of the equation by the same term

5. Simplify.

(Demonstration is on the file I uploaded) <3

You might be interested in

Put these numbers in order from least to greatest. 7, -1/4,-15/20

Agata [3.3K]

Answer:

The answer is -15/20, -1/4, 7. Thanks

8 0

2 years ago

Convert 4.07 to a percent

Tems11 [23]

4.07 * 100 = 407%
407 / 100 = 4.07

6 0

3 years ago

I need help please ?!!

melomori [17]

the answer is b because the answer for both of them is -39. you might also want to look into the sign rules in algebra bb :)

3 0

3 years ago

In triangle FAD, a=12, d=15, and m angle F = 63. Find the value of F to the nearest tenth.

Elza [17]

I believe it is 15.6

4 0

3 years ago

Flying against the wind, a jet travels 8730mi in 9 hours. Flying with the wind, the same jet travels 7260mi in 6 hours. What is

Alex787 [66]

recall your d = rt, distance = rate * time.

j = jet's rate

w = wind's rate

so with the wind the actual speed of the Jet is really j + w, because the wind is adding speed to it, and against it is j - w, since the wind is eroding speed from it.

$\bf \begin{array}{lcccl} &\stackrel{miles}{distance}&\stackrel{mph}{rate}&\stackrel{hours}{time}\\ \cline{2-4}&\\ \textit{against the wind}&8730&j-w&9\\ \textit{with the wind}&7260&j+w&6 \end{array}~\hfill \begin{cases} 8730=(j-w)(9)\\ 7260=(j+w)(6) \end{cases} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{using the 1st equation}}{\cfrac{8730}{9}=j-w\implies }970=j-w\implies 970+w=j \\\\[-0.35em] ~\dotfill$

$\bf \stackrel{\textit{using the 2nd equation}}{\cfrac{7260}{6}=j+w}\implies 1210=j+w\implies \stackrel{\textit{doing some substitution on \underline{j}}}{1210=(970+w)+w} \\\\\\ 1210=970+2w\implies 240=2w\implies \cfrac{240}{2}=w\implies \boxed{120=w} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{we know that}}{970+w=j}\implies 970+120=j\implies \boxed{1090=j}$

4 0

3 years ago