We can multiple the 2 to the other side making y = 8/10 which can be reduce to 4/5
X=6
Isolate the variable by dividing each side by factors that don’t contain variable
<span>Sam had to substitute 100 instead of X
</span><span>5x+3x+20 =
8x + 20 =
8*100 + 20 =
800 + 20 =
820 </span>← answer
IS this from a book or online