If I'm correct your equation is 3x+50=6x−10 Now we solve it --------------- Subtract 6x from each side 3x+50−6x=6x−10−6x −3x+50=−10 -------------------- Subtract 50 from each side −3x+50−50=−10−50 -3x = -60 ----------------------- Divide each side by -3 -3x ÷ -3 = -60 ÷ -3 x = 20