A=22 you're welcome if you need help dm me
77/20 = 3.85 <== terminating decimal
solve for "y" so it is in the form y = mx + b. "m" is the slope and "b" is the y-intercept.
ax + by = c
by = -ax + c <em>subtracted "ax" from both sides</em>
y = (-a/b)x + c/b <em>divided both sides by "b"</em>
Answer: slope is -a/b and y-intercept is c/b
The answer is 20 because if you divide 15:20 by 5, you get 3:4. hope this helps!