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Simplifying 3b + 4b + -4b + -3 = 12 Reorder the terms: -3 + 3b + 4b + -4b = 12 Combine like terms: 3b + 4b = 7b -3 + 7b + -4b = 12 Combine like terms: 7b + -4b = 3b -3 + 3b = 12 Solving -3 + 3b = 12 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + 3b = 12 + 3 Combine like terms: -3 + 3 = 0 0 + 3b = 12 + 3 3b = 12 + 3 Combine like terms: 12 + 3 = 15 3b = 15 Divide each side by '3'. b = 5 Simplifying b = 5
| 2*-19= | | 7a+3b=1.6 | | 38+N=138 | | 13x-11x-x-1=18 | | -5x+10+6x=5+x+5 | | 4sinx+6=7 | | 7/5x=28/15 | | 20v+-19v=-19 | | 74.7=8.3d | | 5x+6-3(1+5x)=-7(2-2x) | | x^3+x-y^2=0 | | -55=25-x | | 6.25=1.25+0.25*x | | 5c-2c-c=18 | | 15=2.5x+8 | | 2(37)+10=180 | | 9X-(2x+7)= | | 6(x+1)=15 | | a-2a=-1 | | 2(6.6)=x+4.3 | | 4h-3h+-14=3 | | -5/14-4/7x | | 4x-120=212 | | 2(x+8)=2x+x | | 5(x+4)+4(7x-5)= | | 40.8=6.8x | | 2(x+8)=4x+2+x | | 2(7.2)=x+8.7 | | x^2-10=7x | | (5x-3)/7=3 | | 2(16)=x+7 | | 6(x-2)=4x+2+x |