Hey there! :)
<em>First, let's substitute y with 0.8, and multiply by 8</em>
0.8 × 8 = 6.4
Here is the new equation:
4x + 6.4 = 40
<em>Now, subtract 6.4 from 40</em>
40 - 6.4 = 33.6
That means 4x = 33.6
<em>Divide both by 4</em>
4x ÷ 4 = x
33.6 ÷ 4 = 8.4
x = 8.4
Hope this helps :)
15(-3 5/8). 15( -29/8). 15 x -29/8. = -435/8. Answer = - 435/8
Because when you multiply the 9 by x you get 9x and when you multiply the 9 by 3 you get 27. So then your final answer would be 9x + 27.
I hope this helps!! :)