Algebra Maths Help PLEASE Please!!!!?

Question

i've tried and tried and i really cant figure out how to do these please please could you help me by telling me the method on how to finding it and the answer
Thankyou so much!


http://x-o-best-answer-princess-o-x.piczo.com/?preview=y&g=37570679&cr=5&rfm=y

its on the link btw thanks

i NEED THE METHOD PLEASE

Answer 1

For both of the problems, you can use the 'cross-multipication' method.

If A/B = C/D then
AD=BC

Rest is just removing the parenthesis and group, then simplify.

In another words, multiply top of left side with bottom of right side, then bottom of left side with top of right side. Then set them equal to each other.

Answer 2

You need to cross multiply.
27) 9(2x + 1) = 7( x + 2)
18x + 9 = 7x + 14, Bring x's to one side and numbers to the other side
18x - 7x = 14- 9
11x = 5
x = 5/11
29) 2 = 4 - 4x
4x = 2
x = 2/4 =1/2

Answer 3

27) it's kind of simple questions. remember, the only way to solve algebra is, put all the x(s) on one side!!

9/(x+2) = 7/ (2x+1)
9 (2x+1)= 7(x+2)
18x +9 = 7x+14
18x - 7x = 14-9
11x = 5
x = 5/11 #

29) using the same method,

4(1-x) = 2
4-4x = 2
-4x = 2-4
x = 1/2 #

Answer 4

the first one is:
(2x+1)9 = 7(x+2)
18x + 9 = 7x + 14
18x-7x = 14-9
11x = 5
x = 5/11

the second one is:

4(1-x) = 2(1)
4 - 4x = 2
-4x = 2 - 4
-4x = -2
x=1/2

Answer 5

27) x = 5/11

29) x = 1/2

Answer 6

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