Answer :
ANSWER
x = -1
EXPLANATION
Let us replace the box with x:
x - 9 = -10
To solve this, collect like terms by taking the -9 to the other side.
The sign changes:
x = 9 - 10
x = -1
ANSWER
x = -1
EXPLANATION
Let us replace the box with x:
x - 9 = -10
To solve this, collect like terms by taking the -9 to the other side.
The sign changes:
x = 9 - 10
x = -1