Решите пж срочно03-05

Question

Решите пж срочно03-05

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Answer 1

X+3=10x-15     x(2x-3)≠0
-9x=-18
x=2

30/(x-1)(x+1)-13/(x²+x+1)=18x+7/(x-1)(x²+x+1)
30(x²+x+1)-13(x²-1)=18x(x+1)
30x²+30x+30-13x²+13-18x²-18
-x²+25=0
x²-25=0
x=5 И Х=-5