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Simplifying (13b + -7) + -4(3b + 4) = -4 Reorder the terms: (-7 + 13b) + -4(3b + 4) = -4 Remove parenthesis around (-7 + 13b) -7 + 13b + -4(3b + 4) = -4 Reorder the terms: -7 + 13b + -4(4 + 3b) = -4 -7 + 13b + (4 * -4 + 3b * -4) = -4 -7 + 13b + (-16 + -12b) = -4 Reorder the terms: -7 + -16 + 13b + -12b = -4 Combine like terms: -7 + -16 = -23 -23 + 13b + -12b = -4 Combine like terms: 13b + -12b = 1b -23 + 1b = -4 Solving -23 + 1b = -4 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '23' to each side of the equation. -23 + 23 + 1b = -4 + 23 Combine like terms: -23 + 23 = 0 0 + 1b = -4 + 23 1b = -4 + 23 Combine like terms: -4 + 23 = 19 1b = 19 Divide each side by '1'. b = 19 Simplifying b = 19
| 150*.5= | | 600=100t-5t^2 | | (6n^5+15n^4+7)-(9n^4+3n^5+3)= | | (3j2/3x7m1/4)(3j1/6x7m3/2) | | 5x+2(3x-2)=1-6x | | p-(-5)+3p=15 | | (3j2/3x7m1.4)(3j1/6x7m3/2) | | 2r+8-t=3 | | y/(-8)=11 | | 12d+3-9d=12-6d | | (8z-14)(7z-8)=0 | | x-0.88=-0.56 | | -8-b=9 | | 15(x-2)(x+3)(x-4)=0 | | (4c-10)(c-4)=0 | | 16/11-18/11 | | 960=(3n-2)*(2n) | | 2(3x+4)=-34 | | x+(x+2)+(x+4)=-18 | | (12y^2)-28y+15=0 | | 17+w+6=23 | | 4A^2+3A+36=8A^2+3A | | x+(x+2)+(x+4)+(x+6)=56 | | 0=2x^2-10-828 | | 2x+24=12 | | 3/5x+2/5-1/3x-4/3=6 | | x/2-2=7 | | x/5=300 | | x^2-18x+144=0 | | 2p(3*1)=12p(2*1) | | 7x-3=7(x-9) | | x+9=-19 |