Substitute the variable for value we're given.
-9(2) - 7
-18 - 7 = -25
So, -25 is the answer.
Uhhh i got 2<span>0 units²</span>
The answer is 468 because 9×52 is 468
we have

step 1
Multiply by 2 both sides

step 2
Group terms

Combine like terms

divide by 2 both sides

Verify
substitute the value of x in the original expression

is ok
the value of x satisfy the equation