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Zigmanuir [339]
3 years ago
7

21-7x=7(3-x) Solve this please!!!!!!!!!!

Mathematics
2 answers:
Elena-2011 [213]3 years ago
4 0

21 - 7x = 7(3 - x)\\21 - 7x = 21 - 7x\\-7x + 7x = 21 - 21\\x \in \mathbb{R}

Hunter-Best [27]3 years ago
3 0

Answer:

All real numbers

Step-by-step explanation:

21 - 7x = 7(3 - x)

21 - 7x = 21 - 7x

Since both sides of the equation are equal, the answer is all real numbers.

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If correct ill give brainlist
Lilit [14]

Answer:

x> y-300/12

Step-by-step explanation

1. Subtract 300 from both sides

2.  Divide both sides by -12

3. Switch the sides

8 0
3 years ago
Now It's Time to Practice on Your
jeka94
Well, this is absolute value, so as a mixed fraction you would have to times the denominator to the whole number, and then add the answer of that to the numerator (2 x 2 x 1). After that, you should get a whole number as an answer, but make it as a fraction. (put the whole number you got on top of the denominator before (2) to make it a fraction). Then, again, since it's absolute value, then it into a negative. Hope this helps and hope it not confusing!!
4 0
3 years ago
What is the slope of the line through the points (-2, -1) and (8, -3)
KiRa [710]

Answer:

The slope of the line through the points (-2,-1) and (8,-3) is -0.2.  Have a nice day and hope this helps.



5 0
3 years ago
Read 2 more answers
*<br> Find the area of a triangle: Base of 8 cm Hight of 9 cm
Sliva [168]

Answer:

36 cm

Step-by-step explanation:

The formula to find the area of a triangle is A=1/2bh where b stands for base and h for height.

So, 8 times 9 equals 72, and 72 divided by 2 is 36.

5 0
3 years ago
The sum of 2 numbers is 84 if one number is 4.less than the other find the numbers​
artcher [175]

Answer:

one number= x = 44

the other number= (x-4)= 40

Step-by-step explanation:

one number= x

the other number= (x-4)

x + (x-4) = 84

2x= 84+4

2x= 88

x= 88/2= 44

one number= x = 44

the other number= (x-4)= 40

3 0
3 years ago
Read 2 more answers
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