penjumlahan dan pengurangan dari (2p +3q -4 ) 4 (p -3q +2) (6xy + 3yz +4z) + ( 3yz +4yx -4z) (2b-3x +5c) - (5a -2c -3b) -3 (2c +1) -(p +5 )

a.(2p+3q-4) 4 (p-3q+2)
=2p+p+3q-3q-4+2+4
=3q+q+2
b.(6xy+3yz+4z)+(3yz+4yx-4z)
=6xy+4yx+3yz+3yz+4z-4z
=6xy+4yx+6yz+z
c.(2b-3x+5c)-(5a-2c-3b)
=2b-3b+5c-2c-3x-5a
=-b+3c-3x-5a
d.-3(2c+1)-(p+5)
=-3-p+2c+1+5
= 3p+2c+6
maaf yah klo salah