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Simplifying (3x + -5) + (4x + 8) = 129 Reorder the terms: (-5 + 3x) + (4x + 8) = 129 Remove parenthesis around (-5 + 3x) -5 + 3x + (4x + 8) = 129 Reorder the terms: -5 + 3x + (8 + 4x) = 129 Remove parenthesis around (8 + 4x) -5 + 3x + 8 + 4x = 129 Reorder the terms: -5 + 8 + 3x + 4x = 129 Combine like terms: -5 + 8 = 3 3 + 3x + 4x = 129 Combine like terms: 3x + 4x = 7x 3 + 7x = 129 Solving 3 + 7x = 129 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 7x = 129 + -3 Combine like terms: 3 + -3 = 0 0 + 7x = 129 + -3 7x = 129 + -3 Combine like terms: 129 + -3 = 126 7x = 126 Divide each side by '7'. x = 18 Simplifying x = 18
| m=4(25)+2(6) | | (X+4)+(3x+3)= | | y-5=6(x-7) | | 2m^2-5m+m=2m^2-12m+16 | | 1/5d=1/2d+9 | | (2x+4)+(8x+6)=120 | | (6x-8)+(2x+16)=80 | | 2(x-8)=10-3(x+2) | | 4x^2+24x-16=0 | | 12x-16y=8 | | 2x=-3y-8 | | 6x(x-1)=21x | | 66.322-13.7455= | | x^2+6x-450=0 | | 3x+10+8x+5+d+5y=360 | | -15u-15=20u-2 | | 8x+7=4x-17 | | 5(4c-1)=18c+5 | | 3*(x-6)=9 | | 0=t^2-t-12 | | 2-7[9-(6y-4)]= | | 9t^2+3t-9=0 | | 8x^4-16x^2+6=0 | | 4t^2/5=7t/5+39/10 | | 4x+5x+2x= | | -5x-7=32 | | 25m^2-25m+6=0 | | -56-8x=10x-16 | | 12=t^2-t | | 24u^6y^8+4u^9x^5y^7=0 | | 132/3*7=952/3 | | x=10-x |