<u>Answer:</u>
Equivalent expression of (-11x+31y) - 2(-x + 5y) is -9x +21y Hence option C is correct
<u>Solution:</u>
Given expression is (-11x+31y) - 2(-x + 5y)
Need to find equivalent expression from four given option.
Let’s first simplify the given expression
(-11x+31y) - 2(-x + 5y)
On opening the brackets we get
-11x + 31y + 2x -10y
Now bringing similar terms together and performing appropriate operation, we get
-11x + 2x + 31y + -10y
Taking common terms out we get,
=> (-11 + 2) x + (31 -10) y
= -9x +21y
Therefore Equivalent expression of (-11x+31y) - 2(-x + 5y) is -9x +21y.
