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Simplifying (7x + 3) + (4x + -1) = 90 Reorder the terms: (3 + 7x) + (4x + -1) = 90 Remove parenthesis around (3 + 7x) 3 + 7x + (4x + -1) = 90 Reorder the terms: 3 + 7x + (-1 + 4x) = 90 Remove parenthesis around (-1 + 4x) 3 + 7x + -1 + 4x = 90 Reorder the terms: 3 + -1 + 7x + 4x = 90 Combine like terms: 3 + -1 = 2 2 + 7x + 4x = 90 Combine like terms: 7x + 4x = 11x 2 + 11x = 90 Solving 2 + 11x = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 11x = 90 + -2 Combine like terms: 2 + -2 = 0 0 + 11x = 90 + -2 11x = 90 + -2 Combine like terms: 90 + -2 = 88 11x = 88 Divide each side by '11'. x = 8 Simplifying x = 8
| 20=8-5(2*-.5-3)+4*-.5 | | -8x-(3x+8)=4-x | | 7x-15=2x-30 | | 12a-a^2=0 | | -9b-b^2=0 | | a(-13+a)=0 | | n(8-n)=0 | | 0.18x=3500-x | | x-7x-60=0 | | f(-4)=4x+5 | | 21^(1/6)/1029^(1/5) | | 2(x+8)=3(x-8) | | 6(x+6)-8=0 | | 49-x^2/21x^3 | | 7-x/3x^5 | | x+12x-45=0 | | 4r-4/r-2 | | 1/5(01 | | 0.4y=5y | | 4(w-7)-(-9w-1)=12w | | (3x+30)+x=90 | | f(x+6)=6x+-8 | | 7-8/6=7 | | -5(x+2)=5-(-1) | | 7e^2x=2 | | x+7x-30=0 | | 100(90+8)+2(90+8)= | | 15x-4=5x-54 | | 6x^2(8x+1)+8x+1= | | 0.62=log(x) | | 3(x+1)-4(x-2)= | | -3/13=9 |