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Simplifying 90 + (4x + -12) + (3x + -3) = 180 Reorder the terms: 90 + (-12 + 4x) + (3x + -3) = 180 Remove parenthesis around (-12 + 4x) 90 + -12 + 4x + (3x + -3) = 180 Reorder the terms: 90 + -12 + 4x + (-3 + 3x) = 180 Remove parenthesis around (-3 + 3x) 90 + -12 + 4x + -3 + 3x = 180 Reorder the terms: 90 + -12 + -3 + 4x + 3x = 180 Combine like terms: 90 + -12 = 78 78 + -3 + 4x + 3x = 180 Combine like terms: 78 + -3 = 75 75 + 4x + 3x = 180 Combine like terms: 4x + 3x = 7x 75 + 7x = 180 Solving 75 + 7x = 180 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-75' to each side of the equation. 75 + -75 + 7x = 180 + -75 Combine like terms: 75 + -75 = 0 0 + 7x = 180 + -75 7x = 180 + -75 Combine like terms: 180 + -75 = 105 7x = 105 Divide each side by '7'. x = 15 Simplifying x = 15
| 91-5x=31x+23 | | 10-8x=84-22x | | 9a-4=3a+20 | | 3x+7=-41-9x | | 6p=p+10 | | 7n-2n+4=19 | | 3x+10+x+20=x | | 3(c-6)=10-2c | | 10z-6(3z+4)=5(2z+(3z+4)-22) | | 4(a+9)=4a+x | | 4(a+9)=4a+36 | | 3x+11=83-6x | | 2t^2-9t-5=0 | | 4x^2-5x+12=8x+2 | | 5x+18=14x-54 | | x^2+19x+30=8x+2 | | x^2-7x+22=10 | | 8x-7=4x+5 | | 3(x+2)-4(x-1)=6 | | 6x+35=8x+13 | | 5(4x-3(x+4))=8x-3 | | 123-4x=32x+23 | | 10-7x=82-21x | | -33-10x=9x+24 | | 2x+14=-76-7x | | 1+5x=45+x | | 4a-4+a+24=6a+20-4a | | 6a-12-8-6a= | | 2(x+3)=4(2x-9) | | -13x+3x-2=5-5x+23 | | (-13x)+3x-2=5-5x+23 | | 5x-3(-10)=15 |