Answer:
4 (d-1)
Step-by-step explanation:
hope this helped <3
15+c=17.50
let c represent the left over money he had. (look at image)
<span><span><span>Step by step :
a/b</span>−8</span>=<span>c/d</span></span>
<span><span>a−<span>8b</span></span>=<span><span>bc/</span>d</span></span>
<span><span><span>ad</span>−<span><span>8b</span>d</span></span>=<span>bc</span></span>
<span><span><span><span>ad</span>−<span><span>8b</span>d</span></span>+<span><span>8b</span>d</span></span>=<span><span>bc</span>+<span><span>8b</span>d</span></span></span><span><span>
ad</span>=<span><span>bc</span>+<span><span>8b</span>d</span></span></span>
<span><span><span>ad/</span>d</span>=<span><span><span>bc</span>+<span><span>8b</span>d/</span></span>d</span></span><span>
a=<span><span><span>bc</span>+<span><span>8b</span>d/</span></span>d</span></span>
Answe r: a=bc+8bd/d
Hoped I helped!