Here is how you solve this problem...
5x*4-3x*5*2x-9= (Combine like-terms)
5x-3x*2x=
2x*2x=(2x)2 (Add the rest of the problem)
(2x)2*4*5-9=(2x)2*20-9
(2x)2*11
(2x)2 *11= your answer
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3x + 2x = 5x. 5x= (-4) X = (-4)/5 x= -0.8
5x - 4 = 3x + 6 5x - 3x = 6 + 4 2x = 10 x = 5
I will explain step by step. So the question is, -5-5x+3x+4 right? You need to combine like terms, -5 and +4 are like terms. Which gives you -1. Then -5x and +3x after you combine is -2x. So in the end you are left with -2x-1. Hope I helped.
2x + 5 + 3x = 25 5x + 5 = 25 Subtract 5 from both sides: 5x = 20 Divide both sides by 5: x = 4
5X + 6 = 2X + 15 -2X -2X 3X + 6 = 15 -6 -6 3X = 15 ---- ----- 3 3 x = 5 im so smart.