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Simplifying (21b + -5) + -5(4b + 1) = -3 Reorder the terms: (-5 + 21b) + -5(4b + 1) = -3 Remove parenthesis around (-5 + 21b) -5 + 21b + -5(4b + 1) = -3 Reorder the terms: -5 + 21b + -5(1 + 4b) = -3 -5 + 21b + (1 * -5 + 4b * -5) = -3 -5 + 21b + (-5 + -20b) = -3 Reorder the terms: -5 + -5 + 21b + -20b = -3 Combine like terms: -5 + -5 = -10 -10 + 21b + -20b = -3 Combine like terms: 21b + -20b = 1b -10 + 1b = -3 Solving -10 + 1b = -3 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + 1b = -3 + 10 Combine like terms: -10 + 10 = 0 0 + 1b = -3 + 10 1b = -3 + 10 Combine like terms: -3 + 10 = 7 1b = 7 Divide each side by '1'. b = 7 Simplifying b = 7
| 7x+4x+2+5=4x+3+6x | | x^2+1x=1 | | 5x^4-6x^2=0 | | 50x^2-64x=0 | | (x-1)+36=-4x | | x^3-6a^2-400=0 | | (6-3i)(-4+6i)= | | 5(4x-3)=20 | | 2(x+4)=10x+24 | | x-3=.85 | | 10z-2(z+4)=8(z-2)+6 | | x+2y=99 | | 5h+2+2h=23 | | 1/3=w-5/3 | | 6.7(x-4)=-0.3x+8.2 | | -x+20-3x-12=7x-5+9 | | 16cos^2x=9 | | w-5/4=7/4 | | (4+i)(5-3i)= | | 7(-185)= | | 7h=-1295 | | 6xy=7x+3y+2 | | 4(2x-3)=26 | | x^2+2x=40 | | (2-4i)-(3-7i)= | | 12x+8=7x+21 | | 12x+8=9x+21 | | 9x=-15 | | -15-(-14)= | | 66-2x=2x-18 | | 10-9x=40-6x | | 9x-1=7x+14 |