How do you solve #0.75x + 0.05( 6- x ) = 0.10( 31)#?

1 Answer
Roy Ø.
Jun 4, 2018

#x=4#

Explanation:

If I understand your equation correctly, you mean
#0.75x+0.05(6-x)=0.10*31=3.1#

Multiplying out each term you get:
#0.75x+0.05(6-x)=0.75x+0.05*6-0.05x=3.1#
#(0.75-0.05)x+0.3=3.1#
#0.7x=3.1-0.3=2.8#
This gives
#7x=28#
or #x=28/7=4#

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