7 d - ( 1 / 2 ) ( 2 d - 4 ) = ( - 5 / 4 ) ( d + 4 )
7 d - ( 1 / 2 ) * 2 d - ( 1 / 2 ) * ( - 4 = ( - 5 / 4 ) * d + ( - 5 / 4 ) * 4
7 d - d + 2 = ( - 5 / 4 ) * d - 5
6 d + 2 = ( - 5 / 4 ) * d - 5
6 d + ( 5 / 4 ) d = - 5 - 2
( 24 / 4 ) d + ( 5 / 4 ) d = - 7
( 29 / 4 ) d = - 7 Multiply both sides by 4
29 d = - 28 Divide both sides by 29
d = - 28 / 29
I keep getting -28/19 for this problem, but it doesn't check with the solution in the back of the book. Help please..
solve the equation
7d-(1/2)(2d-4)=(-5/4)(d+4)
1 answer
1 answer