SOLUTION: . Solve the equation 3x+1/x+1 + 2x-1/x-1=1. 2. Solve the equation 4/c+3 + 5/c+4 = 6/c+7. 3. Solve the equation 0.7x - 0.5x^2 - 0.8 = -6. 4. If x is an integer, solve the inequal

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Question 986004: . Solve the equation 3x+1/x+1 + 2x-1/x-1=1.
2. Solve the equation 4/c+3 + 5/c+4 = 6/c+7.
3. Solve the equation 0.7x - 0.5x^2 - 0.8 = -6.
4. If x is an integer, solve the inequality -8 <2x-3《13.

Answer by Boreal(15235)   (Show Source): You can put this solution on YOUR website!
3. Multiply everything by 10
7x-5x^2-8=-60
-5x^2+7x+52=0
5x^2-7x-52=0
(5x+13)(x-4)=0
x=-13/5
x=4
;
check
2.8-8-0.8=-6
-1.82+3.38-0.8=-6
============
4. -8<2x-3<13
add 3 to everything
-5<2x<16
-2.5 less than x less than 8

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