1) -4,2x(-6y) = 25,2xy
2) 8m+5p-13m-p = -5m+6p
3) k-(17-k)+(-k +30) = k-17+k-k+30 = 13+k
4) -6(4+a)+8(a-6) = -24+(-6a)+8a-48 = -2(-12-7a)
1) -4,2x(-6y) = 25,2xy
2) 8m+5p-13m-p = -5m+6p
3) k-(17-k)+(-k +30) = k-17+k-k+30 = 13+k
4) -6(4+a)+8(a-6) = -24+(-6a)+8a-48 = -2(-12-7a)