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Simplifying (x + 21) = (3x + -15) Reorder the terms: (21 + x) = (3x + -15) Remove parenthesis around (21 + x) 21 + x = (3x + -15) Reorder the terms: 21 + x = (-15 + 3x) Remove parenthesis around (-15 + 3x) 21 + x = -15 + 3x Solving 21 + x = -15 + 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. 21 + x + -3x = -15 + 3x + -3x Combine like terms: x + -3x = -2x 21 + -2x = -15 + 3x + -3x Combine like terms: 3x + -3x = 0 21 + -2x = -15 + 0 21 + -2x = -15 Add '-21' to each side of the equation. 21 + -21 + -2x = -15 + -21 Combine like terms: 21 + -21 = 0 0 + -2x = -15 + -21 -2x = -15 + -21 Combine like terms: -15 + -21 = -36 -2x = -36 Divide each side by '-2'. x = 18 Simplifying x = 18
| 5000x-300=6500x-260 | | -42=2x-14 | | h(t)=-16t^2+80+0 | | 8+k^2=4 | | -2(x+3)=3x+5-x | | 8y-6=8+4y | | .08(x-2000)=3840 | | Y+5=3X-4 | | 5(n+3)=2n-6-3(-n+5) | | -16x^2+96x+5=0 | | 7(-1+.5y)-5y=-19 | | -19-2p=7(5-8p) | | -16x^2+96x+5=h | | 7+3(3x-6)=7-5(2x+1) | | 1x+13y=18 | | Y=2.5x-3.8 | | 5(x+6)=7x+8-2x+22 | | 3x+3y=13.95 | | 17x+42=63x+26 | | 28c-28= | | 18v^9+33v^8+14v^7=0 | | -3(n+2)=4 | | 2x^2+9x-220=0 | | 5a+10=-3a-5 | | 5a-6m+x+12y=10 | | 2x^2-1=9x+17 | | 3-5/6-1/3= | | -76=-4(-4x+3) | | 5x+1y=1.246 | | 10+1/3y=-1 | | 9x^2-64=5x^2 | | -7=13-15 |