b. (5x + 3) − (x − 1) = ...
c. (2y + 15z) − (4y − 8) = ...
Jawaban:
a. (42n + 35m + 7) – (–50m – 20n + 9)
= 42n + 35m + 7+ 50m + 20n – 9
= 35m + 50m + 42n + 20n + 7 – 9
= 85m + 62n – 2
b. (5x + 3) – (x – 1)
= 5x + 3 – x + 1
b. (5x + 3) − (x − 1) = ...
c. (2y + 15z) − (4y − 8) = ...
Jawaban:
a. (42n + 35m + 7) – (–50m – 20n + 9)
= 42n + 35m + 7+ 50m + 20n – 9
= 35m + 50m + 42n + 20n + 7 – 9
= 85m + 62n – 2
b. (5x + 3) – (x – 1)
= 5x + 3 – x + 1
Editor: Dyah Sugesti Weningtyas