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Simplifying -1[4z + -1(13z + 7)] = 7 + (8z + 0) Reorder the terms: -1[4z + -1(7 + 13z)] = 7 + (8z + 0) -1[4z + (7 * -1 + 13z * -1)] = 7 + (8z + 0) -1[4z + (-7 + -13z)] = 7 + (8z + 0) Reorder the terms: -1[-7 + 4z + -13z] = 7 + (8z + 0) Combine like terms: 4z + -13z = -9z -1[-7 + -9z] = 7 + (8z + 0) [-7 * -1 + -9z * -1] = 7 + (8z + 0) [7 + 9z] = 7 + (8z + 0) Reorder the terms: 7 + 9z = 7 + (0 + 8z) Remove the zero: 7 + 9z = 7 + (8z) 7 + 9z = 7 + (8z) Add '-7' to each side of the equation. 7 + -7 + 9z = 7 + -7 + (8z) Combine like terms: 7 + -7 = 0 0 + 9z = 7 + -7 + (8z) 9z = 7 + -7 + (8z) Combine like terms: 7 + -7 = 0 9z = 0 + (8z) 9z = (8z) Solving 9z = (8z) Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '(-8z)' to each side of the equation. 9z + (-8z) = (8z) + (-8z) Combine like terms: 9z + (-8z) = 1z 1z = (8z) + (-8z) Combine like terms: (8z) + (-8z) = 0 1z = 0 Divide each side by '1'. z = 0 Simplifying z = 0
| 0=x^2+63.28125x+11390.625 | | 3g+8-14g+13=-12 | | 12x-5=5x-40 | | 11p=-121 | | X+7+2x=-14+3x+21 | | 4y-7=5y-1 | | 2x+3x=68 | | 5x+10-8x=15-18x+15x-5 | | y=3(7.5)+30y | | (3x+2)=2x-1+x | | n/85=34/170 | | 17x-y=140 | | p^2+3p+3=7 | | 4x-9(-5)=-21 | | -5t=125 | | 12/14=m/4 | | 35=n-5 | | 5x+x^2=168 | | x-59+19=18 | | 56(3x-2)=90 | | (2x-2)-(3x+12)=-15 | | -1/6-4/9 | | 6(2)+15=19 | | 2.4=2y-8 | | 56(3x-2)=180 | | 7/6x=30 | | 8x+3=11x+12 | | (3y-8)=y(2.4) | | 2q+8q=3 | | 1.5x-12=1.5-1.2 | | 4A-5=3a+15 | | 2/3*n=90 |