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Simplifying 87 = 5(3x + 8) + 7 Reorder the terms: 87 = 5(8 + 3x) + 7 87 = (8 * 5 + 3x * 5) + 7 87 = (40 + 15x) + 7 Reorder the terms: 87 = 40 + 7 + 15x Combine like terms: 40 + 7 = 47 87 = 47 + 15x Solving 87 = 47 + 15x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15x' to each side of the equation. 87 + -15x = 47 + 15x + -15x Combine like terms: 15x + -15x = 0 87 + -15x = 47 + 0 87 + -15x = 47 Add '-87' to each side of the equation. 87 + -87 + -15x = 47 + -87 Combine like terms: 87 + -87 = 0 0 + -15x = 47 + -87 -15x = 47 + -87 Combine like terms: 47 + -87 = -40 -15x = -40 Divide each side by '-15'. x = 2.666666667 Simplifying x = 2.666666667
| 3x+9-5(x+1)=6x+9 | | 3(3-1)=b | | 12x+3x=28 | | m-3-6=-3 | | 4=w/5-2 | | 3x+2(x-5)=25 | | 6/5=x/20 | | 8+4v=-4(v+2) | | -r+s+t=u | | 16-(7-2x)=6+x | | 2(4)+4=b | | 2/n-2n/16=3/8 | | 2x+4=9-(7x-3) | | 1/10y | | 5(8-d)= | | 2/3/n/n=54 | | 3x^3-20x^2/12x=0 | | 1.7x-19=4.7x-1 | | .6(15d+2c)-.17(18d-12)=38 | | 1/3x-5/6=4 | | 3x^3-20x^2/12x | | (4u+4v+5)(u-2)= | | .07x+.04(x+1100)=154 | | 36x^4-148x^2=-16 | | 4y^2+24y+35=0 | | 0.06x+.10(3x+21000)=550020 | | 440=2*128+2w | | 7(2x+3)=24.5 | | x^2-7x-30=(x+3)(x-10) | | 400=2*128+2w | | 4(5-2x)=108 | | f(x)=(x^3)-15x+1 |