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Simplifying 15(a + -7) + -4a = 4(a + 5) Reorder the terms: 15(-7 + a) + -4a = 4(a + 5) (-7 * 15 + a * 15) + -4a = 4(a + 5) (-105 + 15a) + -4a = 4(a + 5) Combine like terms: 15a + -4a = 11a -105 + 11a = 4(a + 5) Reorder the terms: -105 + 11a = 4(5 + a) -105 + 11a = (5 * 4 + a * 4) -105 + 11a = (20 + 4a) Solving -105 + 11a = 20 + 4a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-4a' to each side of the equation. -105 + 11a + -4a = 20 + 4a + -4a Combine like terms: 11a + -4a = 7a -105 + 7a = 20 + 4a + -4a Combine like terms: 4a + -4a = 0 -105 + 7a = 20 + 0 -105 + 7a = 20 Add '105' to each side of the equation. -105 + 105 + 7a = 20 + 105 Combine like terms: -105 + 105 = 0 0 + 7a = 20 + 105 7a = 20 + 105 Combine like terms: 20 + 105 = 125 7a = 125 Divide each side by '7'. a = 17.85714286 Simplifying a = 17.85714286
| 4m-12=36 | | 2x-4+x+100=180 | | Sqrt(5-x)=2x | | 12=15z-3 | | 2x^2=-32 | | 5x(3-2x)= | | 1.25=-4c+.25 | | -14n=-6n | | 3.2m=5.6 | | 6.8+2(r-3.1)=0.3r+32.9 | | -1.1(1.1+11.3v)-0.5=-9.9(-13.8v+9.3)+9.2 | | 14.896=r+11.704 | | 4x-5y=63 | | 6x^2=98 | | x^4-2x^3+x=2 | | -3x^2-16x+39=0 | | 7+(-4)=(-3) | | A=ab | | 6.9=8.7 | | (x+7)(x-11)(x+2+6i)(x+2-6i)= | | 1.2+3.4=10.6 | | 3x^2+8=4x | | 1x*5=25 | | -6-x=20 | | 5(15x+75)=1275 | | iflog^10x=3 | | 9xy^2-6y^3= | | (x+7)(x-11)(x+2+6i)= | | 8x^2+6x-2=12 | | 7x-5=4(2x-1) | | 5m+1=7m-11 | | (4x-1)*(2x+2)=12 |