Question 416534

1. 

{{{9m -13 + 3m = 11}}}


{{{12m -13 = 11}}}

{{{12m -13+13 = 11+13}}}

{{{12m = 24}}}

{{{m = 24/12}}}

{{{m  = 2}}}


2.) 

{{{1.5x -1.2 - x = 0.5}}}

{{{(1.5x -1x)-1.2 = 0.5}}}

{{{0.5x -1.2 = 0.5}}}

{{{0.5x -1.2+1.2 = 0.5+1.2}}}

{{{0.5x  = 1.7}}}

{{{x  = 1.7/0.5}}}

{{{x  = 3.4}}}



3.) 

{{{-(7/20)x + 2/5 = (1/4) m}}}

{{{-(7/20)x + 2/5-2/5 = (1/4)m -2/5}}}

{{{-(7/20)x  = (1/4) m-2/5}}}...both sides multiply by {{{20}}}

{{{-(7/20)20x  = 20(1/4) m-20(2/5)}}}

{{{-(7/cross(20))cross(20)x  = cross(20)5(1/cross(4)) m- cross(20)4(2/cross(5))}}}


{{{-7x  = 5m-4}}}

{{{x  = (5/-7)m-(4/-7)}}}

{{{x  = -(5/7)m +(4/7)}}}




4.) 

{{{4w + 15 + 8w < 26}}}

{{{12w + 15 < 26}}}

{{{12w < 26-15}}}

{{{12w < 11}}}

{{{w < 11/12}}}

{{{w < 0.92}}}


5.) 

{{{9c - 8 > 3c + 16}}}

{{{9c - 3c > 8 + 16}}}

{{{6c  > 24}}}

{{{c  > 24/6}}}

{{{c  > 4}}}