Add 7x to each side: 136 = 27x + 20
Subtract 20 from each side: 116 = 27x
Divide each side by 27: x = 116/27 = 4 & 8/27.
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20x + 5 - 20 = 21x + 4 -x = 4 + 15 x = -19
20
11x = 20x +1811x-20x=18x(11-20)=18-9x=18x=-2
20 + x = 55x = 55 -20x= 35
(20 * x) + 3 = 5 20 * x = 2 x = 1/10