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Simplifying (3z + 4) + -1(2z + 9) = 15 Reorder the terms: (4 + 3z) + -1(2z + 9) = 15 Remove parenthesis around (4 + 3z) 4 + 3z + -1(2z + 9) = 15 Reorder the terms: 4 + 3z + -1(9 + 2z) = 15 4 + 3z + (9 * -1 + 2z * -1) = 15 4 + 3z + (-9 + -2z) = 15 Reorder the terms: 4 + -9 + 3z + -2z = 15 Combine like terms: 4 + -9 = -5 -5 + 3z + -2z = 15 Combine like terms: 3z + -2z = 1z -5 + 1z = 15 Solving -5 + 1z = 15 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + 1z = 15 + 5 Combine like terms: -5 + 5 = 0 0 + 1z = 15 + 5 1z = 15 + 5 Combine like terms: 15 + 5 = 20 1z = 20 Divide each side by '1'. z = 20 Simplifying z = 20
| 2/5-3i | | .5x+4=-.25+1 | | 9/1=8/h | | 2x+5y+137=180 | | 6[3x-1-2x]=2(2x-13) | | -3x^2=-150 | | 27=15+3m+m | | =(3x^3)(5x^5) | | -3x=-150 | | 9/1=(9/2)/(1/2)=8/h | | x+80=-5x | | 2(4-8x)/2=-86 | | 0=2(y+4) | | 3xy+4yx+4y^2= | | 7k-5=9 | | 1/4(y-4)-3/4y=3 | | 3(2x+1)-3=6x-2 | | 0.03XN=0.015 | | 3t-23=-11+6t | | .8x-11=3x+52 | | 2x-7(x-2)=17-x | | 80=-6x | | (3y-4)-(7+y)=7 | | 7x-26=-44+4x | | 4y-13+7=180 | | 9/20-1/3 | | 8/48=4/h | | -(5/8)z=(15/32) | | -2/3-7=7 | | 2z-5.1=-24.6+5z | | 370370= | | h/-32=28 |