BŁAGAM POMÓZCIE MI TO Z MATMY , MAM NA JUTRO !! DMA NAJ ! a) -(-4x+2y-3)= b) (7x-8y+5)= c) 3(2x-4y+2) - (-7x + 5y - 4 ) d) 3(a+2b) - 2(3a - 6b) + (a+3)
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a) -(-4x+2y-3)=4x-2y+3
b) (7x-8y+5)=7x-8y+5
c) 3(2x-4y+2) - (-7x + 5y - 4 )=6x-12y+6+7x-5y+4=13x-17y+10
d) 3(a+2b) - 2(3a - 6b) + (a+3)=3a+6b-6a+12b+a+3=-2a+18b+3
a) -(-4x+2y-3)=4x-2y+3
b) (7x-8y+5)=7x-8y+5
c) 3(2x-4y+2) - (-7x + 5y - 4 )=6x-12y+6+7x-5y+4=13x-17y+10
d) 3(a+2b) - 2(3a - 6b) + (a+3)=3a+6b-6a+12b=-3a+18b+a+3=18b-2a+3
:) pozdro ,liczę na naj!