1) 2(x-4)/3+3x+13/8=3(2x-3)/5-7
2) n3-m3/n2-m2 : n2 + nm + m2/ n2+ 2mn+ m2
3) (a+1/2a-2 + 6/2a2-2 - a+3/2a+2) x 4a2-4/3
ПОМОГИТИ!!!!
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