Question

reduccion de terminos semejantes

2pq+3p - 12q -15q+7pq -13p

2x - 6y -2x -3y -5y


15a+13a -12b -11a -4b -b

Answer 1

1)

$2pq+3p-12q-15q+7pq-13p\\=2pq+7pq+3p-13p-12q-15q\\=2pq+7pq-10p-12q-15q\\=9pq-10p-12q-15q\\=9pq-10p-27q$

2)

$2x-6y-2x-3y-5y\\=-6y-3y-5y+2x-2x\\=-6y-3y-5y\\=-14y$

3)

$15a+13a-12b-11a-4b-b\\=15a+13a-11a-12b-4b-b\\=17a-12b-4b-b\\=17a-17b$