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Simplifying (12 + -1z) * 7 = 21 Reorder the terms for easier multiplication: 7(12 + -1z) = 21 (12 * 7 + -1z * 7) = 21 (84 + -7z) = 21 Solving 84 + -7z = 21 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-84' to each side of the equation. 84 + -84 + -7z = 21 + -84 Combine like terms: 84 + -84 = 0 0 + -7z = 21 + -84 -7z = 21 + -84 Combine like terms: 21 + -84 = -63 -7z = -63 Divide each side by '-7'. z = 9 Simplifying z = 9
| y(x)=6+6x+6x^2+6x^3 | | y(x)=a+bx+cx^2+dx^3 | | log8x=-1/2 | | abs(5x+-15)=2 | | x^4+2x^3-6x-3=0 | | 13-y=4y+3 | | F(x)=cos(4x+1) | | 10+5y=2y+1 | | 5x^3-15x^2=48 | | 6x-8-4x^2=0 | | 5a-3=a+18 | | 4x+6x-10=0 | | x+9y+15z=300 | | 3x+9y+15z=300 | | 9a^3-9= | | n(n+1)=48 | | 8x^2-1=3 | | 2x+16x^2=76 | | 8-(3+x)+10x=10x | | 59e+9= | | 2x+16x=86 | | y=sin^11x | | 9x+15y=99 | | 4x+1y+10z=169 | | 0.3x/0.6 | | 5m-2s+6s+6m= | | 9y+3x+6=0 | | 3y+x+2=0 | | 2/3(2x-2)=5 | | X(x-1)=180 | | ln18/5 | | in18/ |