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Simplifying -1[9z + -1(20z + 9)] = 9 + (10z + 2) Reorder the terms: -1[9z + -1(9 + 20z)] = 9 + (10z + 2) -1[9z + (9 * -1 + 20z * -1)] = 9 + (10z + 2) -1[9z + (-9 + -20z)] = 9 + (10z + 2) Reorder the terms: -1[-9 + 9z + -20z] = 9 + (10z + 2) Combine like terms: 9z + -20z = -11z -1[-9 + -11z] = 9 + (10z + 2) [-9 * -1 + -11z * -1] = 9 + (10z + 2) [9 + 11z] = 9 + (10z + 2) Reorder the terms: 9 + 11z = 9 + (2 + 10z) Remove parenthesis around (2 + 10z) 9 + 11z = 9 + 2 + 10z Combine like terms: 9 + 2 = 11 9 + 11z = 11 + 10z Solving 9 + 11z = 11 + 10z Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-10z' to each side of the equation. 9 + 11z + -10z = 11 + 10z + -10z Combine like terms: 11z + -10z = 1z 9 + 1z = 11 + 10z + -10z Combine like terms: 10z + -10z = 0 9 + 1z = 11 + 0 9 + 1z = 11 Add '-9' to each side of the equation. 9 + -9 + 1z = 11 + -9 Combine like terms: 9 + -9 = 0 0 + 1z = 11 + -9 1z = 11 + -9 Combine like terms: 11 + -9 = 2 1z = 2 Divide each side by '1'. z = 2 Simplifying z = 2
| 16-(x+7)=4x-6 | | -5(1.2)+7(-5)=35 | | 0=4z+8z*8z | | -2x-1=10x+3 | | .50x+0.20y=3.00 | | a+22=2a+4 | | 3n+10=46 | | 10x-2.7=21.5 | | 9.25x=74 | | 3y-21x=9 | | 2q^2=3q | | a+22=2a | | 4x+17x=7 | | 8t+1=-8t+17 | | 2x-10=7x+7 | | 3.4x=2.7x+5.6 | | 5(2)(6)-7=3(6)-7(6-7) | | 6[z-(6z+14)+4]=4(z+2) | | -g-11=2g+4 | | 11(2d+9)=22d+99 | | (x+2)(x+4)(x+6)(x+8)=105 | | 6x=2x-36 | | 7*4p+5r*3r+3*3q-5*5r+4*5p-10q= | | a=2a+4 | | -5y-38=2y | | 6x-9x+1=10 | | -5t-38=2y | | (4x-5)(8x+9)= | | 5x+(17x-18)= | | 2v+9=-10 | | -5(1.2)+7(0)=35 | | 7(2m+6)+4=116 |