1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Crazy boy [7]
3 years ago
15

X -(4x- 7) = 5 x- ( x+ 21

Mathematics
1 answer:
Solnce55 [7]3 years ago
6 0

Answer:

x=4

Step-by-step explanation:

<u><em>The question is</em></u>

Find the value of x

we have

x-(4x-7)=5x-(x+21)

solve for x

Eliminate parenthesis both sides

Remember that

(-1)(-1)=+1\\(-1)(+1)=-1

x-4x+7=5x-x-21

Combine like terms

-3x+7=4x-21

Group terms that contain the same variable

4x+3x=7+21\\7x=28\\x=4

<u><em /></u>

You might be interested in
I need help with 63 64 and 65 please please please help
snow_tiger [21]
#64
Let x represent the time spent for valleyball
Then swimming will be 2x

x + 2x = 4.5
3x = 4.5
x = 4.5/3
x = 1.5

Time spent on valleyball: 1 1/2 hours
Time spent on swimming: 3 hours
5 0
3 years ago
Oneta writes an algebraic expression with three terms. The y-term has a coefficient of -3, and the x-term has a coefficient of 1
WINSTONCH [101]

Answer:

Step-by-step explanation:

If X + 3y + 7 is squared by 3y then your answer should be X + 3y sq. + 7 = 10x sq.

6 0
3 years ago
Dimensions of 12feet by 3feet what is the area of the kitchen counter that carlos will laminate
Feliz [49]
12 X 3 = 36ft of the area that Carlos will laminate
5 0
3 years ago
Read 2 more answers
The midpoint of AB is M(1,-2). If the coordinates of A are (-3, -8), what are
shtirl [24]

Answer:

Step-by-step explanation:

(x - 3)/2= 1

x - 3 = 2

x = 5

(y - 8)/2 = -2

y - 8 = -4

y = 4

(5, 4) coordinates for B

3 0
3 years ago
Please help don't understand how to do this, show steps
Anit [1.1K]
First get what equals 20
6 0
3 years ago
Other questions:
  • -5k+4(k+6)=-4(2k+1)...
    8·2 answers
  • Geometry Triangles.....
    7·1 answer
  • I need help I don’t understand
    5·2 answers
  • Find the sum of the given polynomials.
    13·1 answer
  • The test statistic of zequalsnegative 1.54 is obtained when testing the claim that pless than0.18. a. Using a significance level
    12·1 answer
  • look at pic 10 pts will mark brainilest
    15·1 answer
  • What is ans of this question a b c d ​
    11·1 answer
  • Please help! image is shown below.
    13·2 answers
  • Pls pls help with this. extra points. why would i use factoring to solve this quadratic equation?
    12·2 answers
  • How many times does 3 4 go into 6 ?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!