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Simplifying 4(x + 3) + 7(x + -3) = 90 Reorder the terms: 4(3 + x) + 7(x + -3) = 90 (3 * 4 + x * 4) + 7(x + -3) = 90 (12 + 4x) + 7(x + -3) = 90 Reorder the terms: 12 + 4x + 7(-3 + x) = 90 12 + 4x + (-3 * 7 + x * 7) = 90 12 + 4x + (-21 + 7x) = 90 Reorder the terms: 12 + -21 + 4x + 7x = 90 Combine like terms: 12 + -21 = -9 -9 + 4x + 7x = 90 Combine like terms: 4x + 7x = 11x -9 + 11x = 90 Solving -9 + 11x = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + 11x = 90 + 9 Combine like terms: -9 + 9 = 0 0 + 11x = 90 + 9 11x = 90 + 9 Combine like terms: 90 + 9 = 99 11x = 99 Divide each side by '11'. x = 9 Simplifying x = 9
| 5(x+9)-9=36 | | 2(5.99n)+8.25=41.18 | | (u+3)(u-6)= | | -3/45= | | 3y-(13y-13)=13 | | 3x^2+4y^2+18x+8y+19=0 | | 45/-3= | | 15x+10y=620 | | 3x+6=3(x+4) | | 3d-12=-13 | | 11.45+60x=12.45+80x | | z^2+2iz+2i-1=0 | | 5x^2=20x+60 | | 3y=15+5-7y | | 4(x-5)=92 | | D/4-2=-6 | | 4r-3=39 | | m+2m-7m-6= | | 6(10x-8)=3 | | x+2y+3z=23 | | m+2m-7-6= | | 18(36x)=9 | | 2(x^2+2x-96)=0 | | 45=6a+(42-4a) | | 11a-3a= | | y^2-2x^2+6y+8x-3=0 | | 2h-9-11h= | | 2m=3/8 | | 3x=3.2(x+10) | | -5x-10+6x+3=7 | | 5*4y+4=6*x+y+5 | | d=3m+3n |