Rozwiąż wyrażenia algebraiczne: a) -8(-5b+7)+5b= b) 4-5(-4n+3)= c) 1+7(1-3b)= d) -2(7-n)+4= e) -4p-(1-6p)= f) -7(k-8)+2k= g) 3-8(7-5n)= daam naaj !
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a) -8(-5b+7)+5b=40b-56+5b=45b-56
b) 4-5(-4n+3)=4+20n-15=-11+20n
c) 1+7(1-3b)=1+7-21b=8-21b
d) -2(7-n)+4=-14+2n+4=-10+2n
e) -4p-(1-6p)=-4p+1+6p=2p+1
f) -7(k-8)+2k=-7k+56+2k=-5k+56
g) 3-8(7-5n)=3-56+40n=-53+40n