Bantuin dong besok sekolah ngumpulin ini plss​

a. 4x – 3y + 5 – (2x – 5y + 2)

= 4x – 3y + 5 – 2x + 5y – 2

= 2x + 2y + 3

b. 6a + 2b – 4 – (3a – 4b – 6)

= 6a + 2b – 4 – 3a + 4b + 6

= 3a + 6b + 2

c. 5(2x + 3y – 4c) – (6(x – y + 2c))

= 10x + 15y – 20c – (6x – 6y + 12c)

= 10x + 15y – 20c – 6x + 6y – 12c

= 4x + 21y – 32c

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