Question

Tolong dibantu no 4-6

Answer 1

jawabn soal nomer 4
(42n + 35m +7) - (50m - 20n + 9)
= 42n + 35m +7 - 50m +  20n - 9
= 62n + 28m - 2

jawaban soal nomer 5 (oleh )
(5x + 3) - (x-1)
= 5x + 3 -x + 1
= 4x +2

jawaban soal nomer 6 (dari)
(2y + 15z) - (4y -8)
= 2y + 15z -4y + 8
= -2y + 15z + 8