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Simplifying (2x + -3) + (3x + -12) = 90 Reorder the terms: (-3 + 2x) + (3x + -12) = 90 Remove parenthesis around (-3 + 2x) -3 + 2x + (3x + -12) = 90 Reorder the terms: -3 + 2x + (-12 + 3x) = 90 Remove parenthesis around (-12 + 3x) -3 + 2x + -12 + 3x = 90 Reorder the terms: -3 + -12 + 2x + 3x = 90 Combine like terms: -3 + -12 = -15 -15 + 2x + 3x = 90 Combine like terms: 2x + 3x = 5x -15 + 5x = 90 Solving -15 + 5x = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + 5x = 90 + 15 Combine like terms: -15 + 15 = 0 0 + 5x = 90 + 15 5x = 90 + 15 Combine like terms: 90 + 15 = 105 5x = 105 Divide each side by '5'. x = 21 Simplifying x = 21
| P=5x+2y-3 | | 7x-4=4x+9 | | Sinx=6/11 | | 3-sqrtx=0 | | 21x+11y=212 | | Y=My-b | | 2x-15=80 | | 6(1+5x)-2=-236 | | 9x-3=14x-24 | | (2x+12)+(8x-12)=180 | | 3f=7 | | (2x-2)+(6x+4)+(4x-14)=180 | | 5*(13x-7x)=210 | | 1+12x-6x^2=0 | | 4d-3=14-2 | | 3x+(7x+10)=180 | | X+3y+5x-2y= | | y=.5e^3x | | -16t^2+20t+4= | | 5/2-x/3=3x | | 16t^2+30t+4= | | (2x+12)=(8x-18) | | x*1+2x*0.25=48 | | 2/3(x-2) | | l*1+2l*0.25=48 | | 2/3-4/3=4 | | 8k^3-k=0 | | x^2-24x+46=0 | | 3*(15x+7x)=264 | | 7e-4=e | | X-39=21+3x | | -8.38+10=13 |