<span>y-2x=-6 and 5x-y=9
step 1: isolate y in the first equation
y = 2x - 6
step 2: substitute the y value on the 2th equation:
5x-(2x-6)=9
step 3: solve the present equation:
5x - 2x + 6 = 9
3x = 9-6
3x = 3
x = 1
step 4: get the y value by replacing the value of x in </span>y = 2x - 6:
<span>
y = 2*1 - 6
y = 2 - 6
y = -4
S={1, -4}
</span>
The answer is 57.5 because 57 represents a whole number and 1/2 equals .5 so 57.5.
People who answer the question will get a thank you!
$42.
13/2 = 6.5, 25/4 = 6.25, 42/7 = 6.
Just multiply by 8 each time hope this helps :)))