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Simplifying (x + 5)(x + -3) = x(x + -1) Reorder the terms: (5 + x)(x + -3) = x(x + -1) Reorder the terms: (5 + x)(-3 + x) = x(x + -1) Multiply (5 + x) * (-3 + x) (5(-3 + x) + x(-3 + x)) = x(x + -1) ((-3 * 5 + x * 5) + x(-3 + x)) = x(x + -1) ((-15 + 5x) + x(-3 + x)) = x(x + -1) (-15 + 5x + (-3 * x + x * x)) = x(x + -1) (-15 + 5x + (-3x + x2)) = x(x + -1) Combine like terms: 5x + -3x = 2x (-15 + 2x + x2) = x(x + -1) Reorder the terms: -15 + 2x + x2 = x(-1 + x) -15 + 2x + x2 = (-1 * x + x * x) -15 + 2x + x2 = (-1x + x2) Add '-1x2' to each side of the equation. -15 + 2x + x2 + -1x2 = -1x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -15 + 2x + 0 = -1x + x2 + -1x2 -15 + 2x = -1x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -15 + 2x = -1x + 0 -15 + 2x = -1x Solving -15 + 2x = -1x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add 'x' to each side of the equation. -15 + 2x + x = -1x + x Combine like terms: 2x + x = 3x -15 + 3x = -1x + x Combine like terms: -1x + x = 0 -15 + 3x = 0 Add '15' to each side of the equation. -15 + 15 + 3x = 0 + 15 Combine like terms: -15 + 15 = 0 0 + 3x = 0 + 15 3x = 0 + 15 Combine like terms: 0 + 15 = 15 3x = 15 Divide each side by '3'. x = 5 Simplifying x = 5
| -6=2x/7 | | -3/5x=-2 | | 1/7t=4 | | -1+a=8 | | e^6x-9e^3x+8=0 | | 2.1+3.8=6.7-8.5 | | (5x+3)+(2x+21)=x | | Y=3c-2 | | (x^2)y+2x=cy | | -2p+18=14 | | 4x/9=40 | | (2a+3)+a=90 | | 4(2x+4)+2(5x+2)+6=18x+27 | | 5+8-1=9+28-7 | | (2a+3)=a+90 | | 5/21=2/7/y | | 3y+18=x | | Y=10-(1/3)x | | -4.9t^2+42t-20=0 | | 100[0.04(x+7)]= | | 6.6+1.3=3.22 | | 14-9k=-4 | | 3y-1=10x-19 | | 378=469 | | -5.7(3y+5)-1.8(2y-6)= | | -0.2k=-18 | | 9x-5=y+15 | | -18=-0.2k | | Xlogy^3=2 | | a^8xa^(1/5) | | 3.6*0.12= | | 3x/5-x=x/10/5/2 |