October 2018 1 9 Report

Sprowadź wyrażenia do najprostszych postaci i oblicz ich wartośc:

a) 4x-2(5+12x) dla x=-1/2

b) 6(2x-5)-3(2x-7) dla x=1,5

c) 0,5(x+8)+0,2(x-1) dla x=-7

d) -1/2(4x+2)-1/4(16-8x) dlax=4


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