Question #321af

1 Answer
Aug 17, 2016

Answer:

#x = 52, a = 39#

Explanation:

If you have equations which have fractions, you can get rid of the denominators by multiplying each term by the LCD

#x/8 -1/2 = 6 " " LCD = 8#

#(color(red)8 xx x)/8 -(color(red)8 xx 1)/2 = color(red)8 xx 6#

#(color(red)cancel8 xx x)/cancel8 -(color(red)cancel8^4 xx 1)/cancel2 = color(red)8 xx 6#

#x-4 = 48#

#x = 52#

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#15= a/3 -2" "xx3#

#color(blue)3xx15= (color(blue)(cancel3xx)a)/cancel3 - color(blue)(3xx)(-2)#

#45 = a +6#

#39 = a#