21 - 7.5 !!!!!!!!!!!...

August 2022 1 3 Report

Решите уравнение: 5/14x - 12 = 4/21 - 7.5 !!!!!!!!!!!

Answers & Comments

МИРОНОВАЯНА 5/14х=4/21+12-7,5
5/14х=4/21+4,5
5/14х=4/21+45/10
5/14х=40/210+945/210
5/14х=985/210
х=985/210*14/5
х=197/15
х=13 2/15
проверка
5/14*197/15-12=4/21-7,5
197/42-12=4/21-75/10
197/42-504/42=40/210-1575/210
-307/42=-1535/210
-307/42=-307/42

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