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Simplifying 9u + -2(2u + 6) = 28 Reorder the terms: 9u + -2(6 + 2u) = 28 9u + (6 * -2 + 2u * -2) = 28 9u + (-12 + -4u) = 28 Reorder the terms: -12 + 9u + -4u = 28 Combine like terms: 9u + -4u = 5u -12 + 5u = 28 Solving -12 + 5u = 28 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + 5u = 28 + 12 Combine like terms: -12 + 12 = 0 0 + 5u = 28 + 12 5u = 28 + 12 Combine like terms: 28 + 12 = 40 5u = 40 Divide each side by '5'. u = 8 Simplifying u = 8
| 2x+z=13 | | 9+18= | | .5(9-x)+.2=3 | | N*283.2=171.99 | | 1+1/9 | | .50x+.20(9-x)=3 | | 2(4z-3)=3z-16 | | (11a-6b)(2a+3b)= | | (8y+2y)(5y-4y)= | | 2(12-8f)=f-11f | | (7t+5)(7t+5)= | | p-3-2p=p+13 | | (10r-4)(10r-4)= | | x^2-2/3=0 | | (5m-6)(5m-6)= | | (2n+3)(2n+3)= | | 1/3^1/2 | | (6a-5)(3a-8)= | | (7x-4)(5x-1)= | | x^2-1/3=0 | | -4f+9=21 | | (4g+3)(9g+6)= | | x^-1/3=0 | | i^35-7= | | (8d+3)(5d+2)= | | (K+12)(3k-2)= | | g-7=-9 | | 6x^2-5x-25/24=0 | | (2w-55)(w-7)= | | (1/2x)+(2/6x)=1+(2/7x) | | (P+2)(p-10)= | | 1-(2/6y)=3/12y |