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Simplifying 7 + -4(1 + a) = 18 + a 7 + (1 * -4 + a * -4) = 18 + a 7 + (-4 + -4a) = 18 + a Combine like terms: 7 + -4 = 3 3 + -4a = 18 + a Solving 3 + -4a = 18 + a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1a' to each side of the equation. 3 + -4a + -1a = 18 + a + -1a Combine like terms: -4a + -1a = -5a 3 + -5a = 18 + a + -1a Combine like terms: a + -1a = 0 3 + -5a = 18 + 0 3 + -5a = 18 Add '-3' to each side of the equation. 3 + -3 + -5a = 18 + -3 Combine like terms: 3 + -3 = 0 0 + -5a = 18 + -3 -5a = 18 + -3 Combine like terms: 18 + -3 = 15 -5a = 15 Divide each side by '-5'. a = -3 Simplifying a = -3
| 3w=86 | | X-7=-16+4x | | 8-e=7 | | 2m+1.5=1.600 | | -23/4 | | x-0.7=9.08 | | 2-6x-3=-16-3x | | mn(a-b)/np(a-b) | | 3-3-7y=13 | | 5m^4p^3-5m^2p^5= | | 18h=39(6h+4)-12 | | -8+r=3r+6 | | x^2-(-15/x)^2=16 | | 16/2=n/9 | | -6+21=-4x+11 | | y+-1=8 | | (2x-1)-(3x+5)= | | 16/20=24/x | | -2(x+3)-x-4=-3x-12+2 | | ax+b+x=cforx | | t+7=22 | | ax+b+x=c | | 6(3x-(6-5y+4x)+4y)= | | 6x^3+3x+3=0 | | 19.3=8525000/x | | =12.347 | | 7x+20=4x+11 | | 7y+4y+6y=24 | | (4)(-9)= | | D=8/7(m-34) | | 42=8m-16 | | x-2.25=12.347 |