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Simplifying (3z + 4) + (10z + -5) + 90 = 180 Reorder the terms: (4 + 3z) + (10z + -5) + 90 = 180 Remove parenthesis around (4 + 3z) 4 + 3z + (10z + -5) + 90 = 180 Reorder the terms: 4 + 3z + (-5 + 10z) + 90 = 180 Remove parenthesis around (-5 + 10z) 4 + 3z + -5 + 10z + 90 = 180 Reorder the terms: 4 + -5 + 90 + 3z + 10z = 180 Combine like terms: 4 + -5 = -1 -1 + 90 + 3z + 10z = 180 Combine like terms: -1 + 90 = 89 89 + 3z + 10z = 180 Combine like terms: 3z + 10z = 13z 89 + 13z = 180 Solving 89 + 13z = 180 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-89' to each side of the equation. 89 + -89 + 13z = 180 + -89 Combine like terms: 89 + -89 = 0 0 + 13z = 180 + -89 13z = 180 + -89 Combine like terms: 180 + -89 = 91 13z = 91 Divide each side by '13'. z = 7 Simplifying z = 7
| a-24=18 | | x/7=12 | | -7z+4-7=-12 | | 15x^2-18x-24= | | 5-7x=37-35x | | X^2+144=-8 | | 16x+64x^2= | | x^2-12x+34=0 | | x^2+6x+7=2 | | r^2-8tw+4wr-2tr=0 | | 2ln^2x= | | (2x-3)(5x+2)=0 | | 32x^3-24x^2+8=0 | | 4a+16=2a+8 | | (7z+4)+(3z-4)+90=180 | | 4x-2(x-3)=17 | | 6b^2-19b+10= | | 15n/30n=5 | | p=5a-1 | | 153-3x=24x+15 | | 3n-18=n+2 | | 134-3x=42+19 | | x^2-7x=2 | | (r)x-y+1=0 | | 2(0)+4y=8 | | x+15.78=23.67 | | (-2)y=-5x-4 | | 0.25x+24=26 | | x+x=6x-6 | | x+2.34=11.6 | | 0.6x-5=2 | | (2x+4)=(3x-5) |