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Simplifying -1(7 + -2a) = 7 + -2a (7 * -1 + -2a * -1) = 7 + -2a (-7 + 2a) = 7 + -2a Solving -7 + 2a = 7 + -2a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '2a' to each side of the equation. -7 + 2a + 2a = 7 + -2a + 2a Combine like terms: 2a + 2a = 4a -7 + 4a = 7 + -2a + 2a Combine like terms: -2a + 2a = 0 -7 + 4a = 7 + 0 -7 + 4a = 7 Add '7' to each side of the equation. -7 + 7 + 4a = 7 + 7 Combine like terms: -7 + 7 = 0 0 + 4a = 7 + 7 4a = 7 + 7 Combine like terms: 7 + 7 = 14 4a = 14 Divide each side by '4'. a = 3.5 Simplifying a = 3.5
| (3c-2d)(c^2-c+1)-(2c+d)(-2c^2+c-4)= | | 7c^3-5c^2+11c-4c^2d+2cd-6d= | | -.4v+3=-.6666666667v-.4 | | -2c^2d-2c^2d= | | -.4v+3=-6666666667v-.4 | | 2u-.3333333333=-.4u+.6 | | -4(3m+1)=5(2-3m) | | -1.25x-.3333333333=1.75x-7 | | 2cd+cd= | | x+.8=5.6666666667 | | 5x+5-7x=15-12x+10x-10 | | 418=22a | | w+.5=4 | | 8-2x=-4 | | u-.7142857143=2.6666666667 | | u-.7142857143=1.333333333 | | -2.666666667=.8y-1.5 | | -2.5x-.8571428571=1.5 | | 4d+1=13 | | a=n-1t-1x-1 | | tanx=1 | | -2.5+.2857142857v=-1.666666667 | | -2.5+.2857142857=-1.666666667 | | 8-2(3-4e)=5(e-4) | | 3z-4-z+2=0 | | 8x^2+6x=9 | | 3(3-2f)=f+5 | | 5(2y-5)=3(y-1) | | 5e+7=2e-5 | | 7x^2-2x-2=0 | | 10x-5=40x+19 | | (2x-1)2=25 |