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Simplifying (12x + -15) + (3x + 45) = 90 Reorder the terms: (-15 + 12x) + (3x + 45) = 90 Remove parenthesis around (-15 + 12x) -15 + 12x + (3x + 45) = 90 Reorder the terms: -15 + 12x + (45 + 3x) = 90 Remove parenthesis around (45 + 3x) -15 + 12x + 45 + 3x = 90 Reorder the terms: -15 + 45 + 12x + 3x = 90 Combine like terms: -15 + 45 = 30 30 + 12x + 3x = 90 Combine like terms: 12x + 3x = 15x 30 + 15x = 90 Solving 30 + 15x = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + 15x = 90 + -30 Combine like terms: 30 + -30 = 0 0 + 15x = 90 + -30 15x = 90 + -30 Combine like terms: 90 + -30 = 60 15x = 60 Divide each side by '15'. x = 4 Simplifying x = 4
| 2x+46=180 | | x+67=180 | | -7m-19=-2+8(1-4m) | | 12=y+1 | | 3(g+1)=7 | | y+1=y+6 | | 12x+50=90 | | 17.50x+x=x | | 7x-5(8-x)=56 | | 90=11+x+31+2x | | 90=6x | | 2/3-5=7 | | 4x+24+2x=90 | | -23+7n=-5(-4n+2) | | k^2-2k=0 | | 27=w+6+w-3 | | 3x^2+10=9x+50 | | X+(x+2)+(x+4)=357 | | 2x+20+40=90 | | x^2-x=75 | | 2(x+6)=10+4 | | x+x+x=90 | | 100=3.5x+0.5x+10x | | -5-6x-4=9+4x-4x | | 2(c+6)=10+4 | | 43=x+19 | | 6p+14=5p+13 | | 42-6x=12+2x | | 6c+2(4c-3)= | | 1+2x=x-5 | | x+35=90 | | 2(1-d)-(2d+1)= |