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а)[tex] \frac{6x-5}{5}- \frac{3x+4}{4}= \frac{1}{4} [/tex]
а)[tex] \frac{6x-5}{5}- \frac{3x+4}{4}= \frac{1}{4} [/tex]
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(6x-5)/5-(3x+4)/4=1/420*(6x-5)/5-20*(3x+4)/4=20*1/4
4(6x-5)-5(3x+4)=5
24x-10-15x-20=5
9x-40=5
9x=45
x=45/9=5
Ответ: 5