0.2 (x+50) - 6=0.4 (3x+20)

Distrivute 0.2 to x and + 50 and you get 0.2x+10-6 now for the other side we do the same and we get 1.2x+8 or an easier way ... Let's solve your equation step-by-step. 0.2 (x+50) - 6 = 0.4 (3x + 20) Step 1: Simplify both sides of the equation. 0.2x + 4 = 1.2x + 8 Step 2: Subtract 1.2x from both sides. 0.2x + 4 - 1.2x = 1.2x + 8 - 1.2x - x + 4 = 8 Step 3: Subtract 4 from both sides. - x + 4 - 4 = 8-4 - x = 4 now you divide by negative x (technically it is - 1x=4 so your answer is x=-4