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Simplifying 0.3(a + -9) = 0.5a + 2 + -8 + 0.9a Reorder the terms: 0.3(-9 + a) = 0.5a + 2 + -8 + 0.9a (-9 * 0.3 + a * 0.3) = 0.5a + 2 + -8 + 0.9a (-2.7 + 0.3a) = 0.5a + 2 + -8 + 0.9a Reorder the terms: -2.7 + 0.3a = 2 + -8 + 0.5a + 0.9a Combine like terms: 2 + -8 = -6 -2.7 + 0.3a = -6 + 0.5a + 0.9a Combine like terms: 0.5a + 0.9a = 1.4a -2.7 + 0.3a = -6 + 1.4a Solving -2.7 + 0.3a = -6 + 1.4a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1.4a' to each side of the equation. -2.7 + 0.3a + -1.4a = -6 + 1.4a + -1.4a Combine like terms: 0.3a + -1.4a = -1.1a -2.7 + -1.1a = -6 + 1.4a + -1.4a Combine like terms: 1.4a + -1.4a = 0.0 -2.7 + -1.1a = -6 + 0.0 -2.7 + -1.1a = -6 Add '2.7' to each side of the equation. -2.7 + 2.7 + -1.1a = -6 + 2.7 Combine like terms: -2.7 + 2.7 = 0.0 0.0 + -1.1a = -6 + 2.7 -1.1a = -6 + 2.7 Combine like terms: -6 + 2.7 = -3.3 -1.1a = -3.3 Divide each side by '-1.1'. a = 3 Simplifying a = 3
| 2x^2+1=-1 | | (67.38+-3.63(1.16+-0.71z)+-3.44z)(280.79)+1020.12(1.16+-0.71z)+966.52z=18920.62 | | 4x^2+x-39=0 | | 12n-n+5n=what | | 7x+21=9x+3 | | Ln(x+2)=1 | | 0.85x+0.05(14-x)=0.10(-25) | | 12+2(x-4)=20-2x | | (67.38+-3.63y+-3.44z)(280.79)+1020.12y+966.52z=18920.62 | | 3u^2+2=-5 | | 7x-8=87 | | 6(4y+2)-9=-3 | | 3b-(-4b)= | | x^2=-19 | | 12y+15x=292.50 | | -3y-3=1-2y | | 2(t-3)+9=-7 | | 280.79x+1020.12y+966.52z=18920.62 | | M-5=3(M-5) | | 3x+1=7x-3 | | M-5=3M-5 | | (-12+-8x+x^2)=0 | | -5(3a-6)=0 | | 4+4(x+5)=40 | | -3/x=7 | | 50=-2x+10y | | 3x^2-24x-36=0 | | -3(4y-4)=-24 | | 4x+5p=18 | | 9x+15y=87 | | 2y^2+5y-18= | | 16=a/3 |