Please help with 5 math questions

posted by .

1. 7r – 7 = 2r + 18

r = –5
r = 5
r = 2.2
r = 1.2

2. 2x + 12 = 18 – x

x = 3
x = 10
x = 6
x = 2

3. 8x – 3 = 15x + 18

x = –3
x = 3
x = 2.1
x = .9

4. 6y – 6 = 4y + 16

y = 2.2
y = –2.2
y = 11
y = 5

5. 3(x – 4) = 5(x + 2)

x = 11
x = –11
x = 1
x = –1

  • Please help with 5 math questions -

    Intrustions: Solve the equation. Round to the nearest tenth if necessary.

  • steve help -

    Steve anyone help

  • Please help with 5 math questions -

    these are all basically the same. Here's #5. It should help you on the others:

    3(x-4) = 5(x-2)
    expand to remove parentheses:
    3x-12 = 5x+10

    collect the x stuff on one side:
    -2x = 22

    divide by the coefficient of x: -2
    x = -11

    finally, check your answer!
    3(-11-4) = 5(-11+2)
    3(-15) = 5(-9)
    -45 = -45

    if you get stuck on the others, come on back and show how far you got.

  • Please help with 5 math questions -

    ok so check my answers:


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

  • Please help with 5 math questions -

    1. ok
    2. ok
    3. ok
    4. ok

    as you could verify by plugging those values into the equations.

  • Please help with 5 math questions -

    That was easy thanks

  • Please help with 5 math questions -

    it's always easy if you know what you're doing.

    even so, there are lots of problems where the steps are easy, but you have to watch the details.

  • Please help with 5 math questions -

    Ok.

  • Please help with 5 math questions -

    looks hard.

  • Please help with 5 math questions -

    it is

  • Please help with 5 math questions -

    Yay for steve!

  • Please help with 5 math questions -

    the answers are
    b
    d
    a
    c
    b

  • Please help with 5 math questions -

    Thanks! 100% correct

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