Math help please

posted by .

1. Solve for x.

4(x - b) = x

b = 4/3x
b = 3/4x
x = 4/3b
x = 3/4b

2. Solve for y, then find the value of y when given x = 2.

6x = 7 - 4y

-12
7/4
19/4
24

I need help solving these. Can you please explain how to solve these problems?

  • Math help please -

    #1
    4(x-b) = x
    4x-4b = x
    3x = 4b
    x = 4/3 b

    #2
    6x = 7-4y
    4y = 7-6x
    y = (7-6x)/4

    y(2) = (7-6*2)/4
    = (7-12)/4
    = -5/4
    Hmmm. Typo? -6x = 7-4y?

  • Math help please -

    1. c
    2. c
    3. a
    4. d

  • Math help please -

    DJ is right

  • Math help please -

    Thanks, DJ. I got a 100%

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. algebra

    use substitution to solve the linear system 3x-y=15 x+2y=-2 Solve for y in one formula, and then substitute that value for y in the other formula to solve for x. Once you find x, substitute that value into either formula to get the …
  2. algebra

    use substitution to solve the linear system 3x+2y=-5 4x-3y=16 help plz!!! Solve for y in one formula, and then substitute that value for y in the other formula to solve for x. Once you find x, substitute that value into either formula …
  3. Math

    Solve the system by addition or substitution. 3x – 4y = 8 6x – 2y = 10 Please get me on the correct track for 3x -4y =8 x=4, y=1 for 6x - 2y =10 x= 2, y= 1 Solve one equation for x. 3x = 4y + 8 x = (4y + 8)/3 Insert that value …
  4. Calculus - Seperable Equations

    Solve the separable differential equation (dy/dx)=y(1+x) for y and find the exact value for y(.3). dy/dx = y(1+x) dy/y = (1+x)dx Integral (dy/y) = Integral (1+x)dx ln (y) = x + (1/2)x^2 + C y = e^(x + (1/2)x^2 + C) y(0.3) = e^(0.345 …
  5. math

    could someone please help. given each set of data for ∆ABC: a) solve for b given ∠B=88 degrees,a=31.5m,c=25.6cm b) solve for a given ∠B=66 degrees,∠C=28 degrees,c=11.6cm i) state whether the sine law or cosine …
  6. math

    Solve for y, then find the value of y when given x = –2. 6x = 7 – 4y
  7. algebra

    Solve the formula for the variable given.Then use the given information to find the value of the variable. A=2πrw Find r if w=4ft And A=120ft square. Please someone help me with this!!!
  8. math

    Could someone check these questions for me?
  9. math

    1.solve for p 3(p+q)=p A.q=-2/3p B.q=-3/2p C.p=-2/3q D.p=-3/2q 2. solve for b then find the value of b when a=3 4a=2b-7 A.-9/2 B.5/2 C.19/2 D.17 3. solve for r d=rt A.r=dt B.r=t/d C.d/t D.r=d-t 4. find the width of a rectangle with …
  10. Algebra 1

    1. Solve for x. 4(x – b) = x b= 4/3x b=3/4x x=4/3b x=3/4b Solve for y, then find the value of y when given x = –2. 6x = 7 – 4y –12 7/4 19/4 24 solve for h A= 1/2bh h=2A/b 2A=b/h h=1/2Ab h=2Ab

More Similar Questions