Question:
help me solve 4(4x+1)-20=3(4x-5)?
cityboy22478
2006-03-18 07:38:24 UTC
help me solve 4(4x+1)-20=3(4x-5)?
Seven answers:
bactophage
2006-03-18 07:41:46 UTC
first... need to get all the like terms to one side of the equation



-20=3(4x-5)-4(4x+1)



distribute and simplify



-20=12x-15-16x-4 (distrubting a -4)

-20=-4x-19

-1=-4x

(1/4)=x
2016-12-07 07:16:50 UTC
PEMDAS - order of operations is going as follows: Parentheses, Exponent, Multiply/Divide, upload/Subtract. So we can bypass at this one a time. Do the exponent (in parentheses on your subject) first: (-a million/4) ÷ (5/4) - 2 ( a million / 3 ) ÷ ( - 8 / 27) , as (-2/3) ^ 3 = ( (-2)^3 / 3 ^ 3 ) = ( - 8 / 27 ) . Now, do the multiplication and dividing interior the order it comes. bear in mind that dividing by fractions is a similar element as multiplying by the reciprocal (the place the numerator (top) and denominator (backside) change places). Then this turns into (-a million/4) ( 4 / 5 ) - ( 2 / 3 ) ( 27 / 8 ) ( -a million ) word that I "factored out" the (-a million) from the -8/27 as quickly as I took the reciprocal of it for branch. I dont' recognize in case you have accomplished algebra yet, yet in case you have not, then you definately will possibly not recognize what it skill - purely take my word for it. So it turns into: [ ( -a million)(4) / (4)(5) ] + [ (2)(27) / (3)(8) ] Which simplifies to (-4 / 20) + (fifty 4 / 24) = (-a million/5) + (9/4) = ( - sixteen + 9 ( 5 ) ) / 20 = (40 5 - sixteen) / 20 = 29/20 So i might say your answer is: 29/20
2006-03-18 07:39:51 UTC
8x + 4 - 20 = 12x- 15

-5 = 4x

-5/4 = x
Nerd
2006-03-18 07:48:38 UTC
First remove the brackets.

16x + 4 - 20 = 12x- 15

Then place the like terms together

-1 = -4x

Devide each side by negative four to get x

x=1/4
alcshorty1990
2006-03-18 11:17:38 UTC
16x+4-20=12x-15



16x-16=12x-15

-12x -12x

-------------

4x-16=-15

+16 +16

----------

4x=1



1 divided by 4 is 1\4



X= 1/4
2006-03-18 07:40:08 UTC
x=1/4



the other chick above me is wrong. 4*4 does not equal 8.
kawaii
2006-03-18 08:43:07 UTC
16x-16=12x-15

4x=1

x=1/4


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