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Simplifying (9b + -7) + -2(4b + 4) = -7 Reorder the terms: (-7 + 9b) + -2(4b + 4) = -7 Remove parenthesis around (-7 + 9b) -7 + 9b + -2(4b + 4) = -7 Reorder the terms: -7 + 9b + -2(4 + 4b) = -7 -7 + 9b + (4 * -2 + 4b * -2) = -7 -7 + 9b + (-8 + -8b) = -7 Reorder the terms: -7 + -8 + 9b + -8b = -7 Combine like terms: -7 + -8 = -15 -15 + 9b + -8b = -7 Combine like terms: 9b + -8b = 1b -15 + 1b = -7 Solving -15 + 1b = -7 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + 1b = -7 + 15 Combine like terms: -15 + 15 = 0 0 + 1b = -7 + 15 1b = -7 + 15 Combine like terms: -7 + 15 = 8 1b = 8 Divide each side by '1'. b = 8 Simplifying b = 8
| -14=-140 | | 3x+1y=45 | | -3(2b+4)+(7b-7)=0 | | z=7-5i | | 7+25x=20x+15 | | 5x/y^2 | | 4/3=x/14 | | x+3x-x+8+x=55 | | 4/3=14/x | | 4/3=14//x | | 72-x=16 | | y=13/5(-0.4)-6 | | 2sin^2x+9cosx=6 | | 90+x=190 | | 37/x=6/14 | | 40+x=56 | | (5v+6)(5-v)=0 | | v-4/v-7 | | 8 = t6 | | .75x+5=10 | | 180-x=120 | | 2a^2+8ab-3a-12b=0 | | 2m^2-21m-36=0 | | 180-x=74 | | 120-x=67 | | 80-x=67 | | Y=-0.4x+19.26 | | .75x-5=5 | | x+17=80 | | .75x=5 | | .4x+7.8=5.6 | | 12/4/3=36/4 |