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allochka39001 [22]
2 years ago
6

Solve For x. (-4x+5)-(6x+7)=0 (Pls Explain Your Answer in Simple Terms)

Mathematics
2 answers:
zepelin [54]2 years ago
7 0
-4x+5-6x+7=0
-4x-6x=-7-5
-10x=-12
10x=12
X=1.2
Alchen [17]2 years ago
6 0

Answer:

- 4x + 5 - (6x + 7)  = 0\\   - 4x + 5 - 6x - 7 = 0 \\  - 10x - 2 = 0 \\ 10x + 2 = 0 \\ 10x =  - 2 \\ x =  \frac{ - 2}{10}  \\ x =  - .2 \\ thank \: you

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11 people. Hope this helped!!
6 0
3 years ago
Read 2 more answers
If 5y = 6x + 16 and 9x = 7y-20, what is the value of 3x - 2y?
Law Incorporation [45]

The value of 3x-2y is -4. From the equation 5y=6x=16 and 9x=7y-20 the values of (x,y) is (4,8).

Step-by-step explanation:

        The given equations are,

                 5y=6x+16.......................(1)

                 9x=7y-20......................(2)

                3x-2y...............................(3)

Step:1

    Modify the equations (1) and (2) in (x+y=constant) format,

                6x-5y=-16.....................(4)

                9x-7y=-20....................(5)

Step:2

     Equation (4) is multiplied by 7     ( ∵ 7×Eqn(4))

                42x-35y=-112..............(6)

Step:3

     Equation (5) is multiplied by 5     (∵ 5×Eqn(5))

               45x-35y=-100.............(7)

Step:4

    Subtracting Equation (6) and (7)

               42x-35y=-112

              45x-35y=-100

    ( - )

     (42x-45x)+(35y-35y)=(100-112)

     (-3x)+(0)=(-12)

    x=4

Step:5

    Substitute X value in Equation (1),

             5y=6x+16...................(1)

     where, x=4,

             5y= (6×4)+16

             5y=40

            y= 8

Step: 6

      Check for solution, substitute x and y values in equation (2).

                9x=7y-20.......................(2)

               (9×4)=(7×8)-20

              36=36

Step:7

      From given, 3x-2y

      where, X=4 and y=8

              3x-2y = (3×4)-(2×8)

                        = 12-16

            3x-2y = -4

Result:

      The value for 3x-2y is -4. The values of (x,y) are (4,8).

   

5 0
3 years ago
Read 2 more answers
4y<br> p(y) =&gt; + 5. If y = 4, then what is the value of p(y)?<br> 9<br> 7<br> 13<br> 37
Leni [432]

9514 1404 393

Answer:

  C.  13

Step-by-step explanation:

Put 4 where y is in the equation and do the arithmetic.

  p(y)=\dfrac{4y}{2}+5\\\\p(4)=\dfrac{4(4)}{2}+5 = \dfrac{16}{2}+5=8+5\\\\\boxed{p(4)=13}

3 0
3 years ago
How do I solve 9a-7=110
Sphinxa [80]
You'll need to isolate 9a on the left side of this equation
Please add 7 to both sides of the eqn, obtaining 9a = 117.

Solve for a by dividing both sides by 9:  a = 117/9 = 13 (answer)
6 0
3 years ago
Read 2 more answers
6x²-y³=1<br><br>differentiate the equation to dy/dx
kenny6666 [7]
Dy/dx=4x/y2 this is what i got 
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5 0
3 years ago
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