Question

plz answer with whole working plz ​

Answer 1

Step-by-step explanation:

$1) 15x + ( - 7y) + ( - 18x) + 4y \\ = 15x - 18x + 4y - 7y \\ = - 3x - 3y = - 3(x + y) \\ \\ 2) - 3x + ( - 5y) - ( - 10y) - 7x \\ = - 3x - 7x + 10y - 5y \\ = - 10x + 5y = - 5(2x - y) \\ \\ 3)9x - ( - 2y) - 8x - ( - 12y) \\ = 9x - 8x + 2y + 12y \\ = x + 14y \\ \\ 4) - 7x - ( - 15y) - ( - 2x) + ( - 6y) \\ = - 7x + 2x + 15y - 6y \\ = - 5x + 9y$

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Answer 2

Answer:

the answers are there

Step-by-step explanation: