October 2018 1 27 Report

Bardzo proszę o pomoc!
Rozwiąż równania metodą podstawiania:
a) {2/3x + 1/2y = 5
{1/3x - 1/2y = -1


b) {0,6(x+2)-0,7(y-2)= -0,1
{0,4(x-2) + 0,3(y+2)= 0,3


c) {x+5/3 -(1-y) = -3
{ y+5/2 - (x-1) = 4


d) {x-1/4 + 2 = y
{ y-3/3 + 5 = x


e) {(x-8)² - (x-9)² = 2y - 7
{(y+1)² - (y-3)(y+3) = 3x - 6


f) {3(x+2)/5 + 5(y-2)/2 = 3
{x+1/4 - y-7/5 = 2

Za pomoc z góry dziękuję. Dam naj!


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