Answer:
option b
Step-by-step explanation:
the denominator is in the surd form, so it must be rationalized
It's 18/100. The reduced / simplest form is 9/50 because you divide it by 2 since it's the GCS.
X = 4y
3x - y = 70
substitute the x in the second equation with the other half of the first equation.
3(4y) - y = 70
12y - y = 70
11y = 70
y = 6.36 repeating, or 6 4/11
now use this to solve first equation
x = 4 (6 4/11)
x = 25.45 repeating
done