Solution
Steps
1) Identify all like terms together.
2) sum all like terms
a) -6y + 5x +7y
The like terms here are -6y and 7y
-6y + 7y = y
Therefore, we will have
-6y + 7y +5x
= y + 5x
b) x-10 +9x-3
The like terms are x and +9x, then -10 and -3
Hence,
x +9x -10-3
= 10x -13
c) 11x -12x+12
The like terms here are 11x and -12x
Hence,
11x-12x+12
= -x +12
= 12-x
d) 8y-8x+y-11x
The like terms here are 8y and y, then -8x and -11x
Hence,
8y +y -8x+(-11x)
= 9y -19x-