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Simplifying 0 = 9(2k + -4) + -2(7k + -12) Reorder the terms: 0 = 9(-4 + 2k) + -2(7k + -12) 0 = (-4 * 9 + 2k * 9) + -2(7k + -12) 0 = (-36 + 18k) + -2(7k + -12) Reorder the terms: 0 = -36 + 18k + -2(-12 + 7k) 0 = -36 + 18k + (-12 * -2 + 7k * -2) 0 = -36 + 18k + (24 + -14k) Reorder the terms: 0 = -36 + 24 + 18k + -14k Combine like terms: -36 + 24 = -12 0 = -12 + 18k + -14k Combine like terms: 18k + -14k = 4k 0 = -12 + 4k Solving 0 = -12 + 4k Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-4k' to each side of the equation. 0 + -4k = -12 + 4k + -4k Remove the zero: -4k = -12 + 4k + -4k Combine like terms: 4k + -4k = 0 -4k = -12 + 0 -4k = -12 Divide each side by '-4'. k = 3 Simplifying k = 3
| 5x^2-12=-28x | | 5n+3=2n+14 | | =8(2x-3)-6x | | x(x+2)(x+4)(x+6)=105 | | 2(-5-1)=3(-5+1) | | 43w-12=23w | | =2(x-y+8) | | 28-3a=5a-4 | | 2a^2-8a-16=10 | | (x^2-x-42)*lg(x+5)=0 | | 6x+10x=3300 | | 2.2x-0.001x^2=0.4x+60 | | 5k^2-20k=81 | | 15x+738=72x | | 5=87 | | (x+6)(x-2)(x-18)=0 | | y=x^2-7forx | | 4+3x=5y+-2 | | 6(3x-17)=42 | | =6a(b+2c) | | -12.4-m=18.3 | | =x(y+4) | | 3y-2x=120 | | =3(2x-4) | | =-4(-w-10) | | x=9+2(9+0.5x) | | =-(y-9) | | x=9+2(9+0.5y) | | =-4(y+3) | | h(t)=-16t^2+v^0t+s^0 | | =7(x+4) | | 30x+6=30 |