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Simplifying (2 + 7z) + (8z + -6) + -1(4 + 9z) = 22 Remove parenthesis around (2 + 7z) 2 + 7z + (8z + -6) + -1(4 + 9z) = 22 Reorder the terms: 2 + 7z + (-6 + 8z) + -1(4 + 9z) = 22 Remove parenthesis around (-6 + 8z) 2 + 7z + -6 + 8z + -1(4 + 9z) = 22 2 + 7z + -6 + 8z + (4 * -1 + 9z * -1) = 22 2 + 7z + -6 + 8z + (-4 + -9z) = 22 Reorder the terms: 2 + -6 + -4 + 7z + 8z + -9z = 22 Combine like terms: 2 + -6 = -4 -4 + -4 + 7z + 8z + -9z = 22 Combine like terms: -4 + -4 = -8 -8 + 7z + 8z + -9z = 22 Combine like terms: 7z + 8z = 15z -8 + 15z + -9z = 22 Combine like terms: 15z + -9z = 6z -8 + 6z = 22 Solving -8 + 6z = 22 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + 6z = 22 + 8 Combine like terms: -8 + 8 = 0 0 + 6z = 22 + 8 6z = 22 + 8 Combine like terms: 22 + 8 = 30 6z = 30 Divide each side by '6'. z = 5 Simplifying z = 5
| -6x+5y=15 | | -6+5y=15 | | n-10/-1=0 | | w-2/3=72/5 | | 4x^2+y^2+6y+5=0 | | h-46/-5=-7 | | 100[0.07(n+4)]= | | y^2+3y=9 | | -7/2(y-6)-1/4y | | 7x-4y=16 | | 3(k-5)+1=10 | | 4(p+2)-8=4 | | n/7=n/3+4/21 | | -3(p+-1)=-6 | | 1/u-2 | | 3(8y+5)-2(2y)=57 | | 3x+5=0-20 | | 20=4(q+2) | | r^2-r-1=0 | | 3/u+2 | | 11=0-3-10 | | 3(k+20)-6=12 | | 9x^2+6xy+y^2-64x-8y+140=0 | | a+11=17 | | -11=-3u | | 3(4k+2)-17k+8+4= | | 3=-12/f | | 3=9/y | | -5.3(4s+6)-1.6(2s-5)= | | 3(s+1)+6=6 | | 5X=8X+15 | | 3(m+2)=9 |