zad 3 str 163
a) 4c-(3c+2)-10c
b) 7x-8-(5x+6)
c) 9y-(8-3y)+16
d) 5x-(2-4x)+8x-7
e) -(-5c-80+6-9c-c
f ) -4(3x-6)-3(2+7x)
g) 5(3z-7(-9(-8z-6)
h) -3(5x-4)+8(-3x+2)
i) 7x-3(5x+2)-6(7+2x)
J) -5(3y-7)-2(6+4y)+3y
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a) 4c-(3c+2)-10c= 4c - 3c - 2 - 10c= -2 - 9c
b) 7x-8-(5x+6)= 7x-8-5x-6=2x-15
c) 9y-(8-3y)+16= 9y-8+3y+16= 12y+8
d) 5x-(2-4x)+8x-7= 5x-2+4x+8x-7=17x-9
e) 5c+80-6+9c+c= 74+15c
f) -4(3x-6)-3(2+7x)=-12x+24-6-21x= 18-33x
g) 5(3z-7)-9(-8-6)=15z-35+72+63= 15z+100
h) -15x+12-24x+16= -39x + 28
i) 7x-3(5x+2)-6(7+2x)=7x-15x-6-42-12x= -20x -48
j) -15y+35 - 12-8y+3y=23-19y