Answer:
To solve an equation you can use PEMDAS, standing for parenthesis, exponents, multiplication, division and addition. If it's an equation like, x/3+7+13, you could use the distributive property. By separating variables.
Step-by-step explanation:
Answer:
y = 90
Step-by-step explanation:
Since, e || f and a || b
Therefore, quadrilateral so formed is a rectangle.
Each angle of a rectangle is right angle.

Answer:
2 2/4 - 1 1/4 = 1 1/4
Step-by-step explanation:
Hope this helps!
if not I am sorry
Answer: y - 4x = 9 <em>in standard form is</em> -y + 4x = -9