0.90 x $ + 8$ = ( 16 + x ) ∗ 0.65$ 0.90 x $ + 8$ = 10.4$ + 0.65 x $ 0.90 x $ − 0.65 x $ = 10.4$ − 8$ 0.25 x $ = 2.4$ x = 0.25$ 2.4$ = 9.6
To solve the equation 0.90 x + 8 = ( 16 + x ) ( 0.65 ) , expand and rearrange to isolate x . After simplifying, you find that x = 9.6 .
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