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Simplifying 90 = (7x + -5) + (x + 3) Reorder the terms: 90 = (-5 + 7x) + (x + 3) Remove parenthesis around (-5 + 7x) 90 = -5 + 7x + (x + 3) Reorder the terms: 90 = -5 + 7x + (3 + x) Remove parenthesis around (3 + x) 90 = -5 + 7x + 3 + x Reorder the terms: 90 = -5 + 3 + 7x + x Combine like terms: -5 + 3 = -2 90 = -2 + 7x + x Combine like terms: 7x + x = 8x 90 = -2 + 8x Solving 90 = -2 + 8x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8x' to each side of the equation. 90 + -8x = -2 + 8x + -8x Combine like terms: 8x + -8x = 0 90 + -8x = -2 + 0 90 + -8x = -2 Add '-90' to each side of the equation. 90 + -90 + -8x = -2 + -90 Combine like terms: 90 + -90 = 0 0 + -8x = -2 + -90 -8x = -2 + -90 Combine like terms: -2 + -90 = -92 -8x = -92 Divide each side by '-8'. x = 11.5 Simplifying x = 11.5
| 12-45=180 | | 2x+(x+8)=43 | | 9=5(4x+4) | | (4a-2b)+(9a-4)+(7a+3)= | | 8(6m+1)=334 | | 5(x-3)=3x+9 | | (Y^2)-xy-6=0 | | 3x+(x-40)=180 | | 27x^5-6x^4/3x^2 | | 2h^2+56h=1920 | | (2a-5)(2a+5)= | | 2+80= | | -5(2k-6)=100 | | 4n^2+1=308 | | h(t)=-16t^2+20t+50 | | (-2)(4)(-7)(-1)(3)= | | 6r-r-2=0 | | -105=5(7n+7) | | 4n-9=9+2n | | 7-5/2-2 | | 7+2(x+6)=43 | | (40-2x)(18-2x)-408=0 | | 0=4w^2-5w-36 | | 4n^2*1=309 | | 34m-24n=10 | | 3800-40m=2000 | | 5(x+3)+6(x-6)=210 | | .5v+3=7 | | (w+2X)+(2w+3y)+(X+3z)=150+100+50 | | 4c^2+8=17 | | 84/x=2 | | 5/8x-1/4=5.5 |