wykonaj działania, a nastepnie redukcje wyrazów podobnych:
2(a-3b) + 4b-3(3a-b)
4 (x+5y) - 7 (3x-y) + 3y - x
3a (2-5b) - 4b (2-3b) + ab
4x (y-7) - 3y (-3-5x) + x (y-3)
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A
2(a-3b)+4b-3(3a-b)=
2a-6b+4b-9a+3b=
-7a+b
B
4(x+5y)-7(3x-y)+3y-x=
4x+20y-21x+7y+3y-x=
-18x+30y
C
3a(2-5b)-4b(2-3b)+ab=
6a-15b-8b+12b2+ab=
6a-23b-8b+12b2+ab
D
4x(y-7)-3y(-3-5x)+x (y-3)=
4xy-8xy+9y+15xy+xy-3x=
12xy+9y-3x
proszę o naj!!!!!!!!
2(a-3b) + 4b-3(3a-b)=2a-6b+4b-9a+3b=-7a+b
4 (x+5y) - 7 (3x-y) + 3y - x=4x+20y-21x+7y+3y-x=-18x+30y
3a (2-5b) - 4b (2-3b) + ab= 6a-15b-8b+12b^2 +ab= 6a-23b+12b^2 +ab
4x (y-7) - 3y (-3-5x) + x (y-3)= 4xy -28x +9y+15xy +xy -3x= 20xy-31x+9y