Question

решить уравнение 5+х+7х=61
(7х-54)+32=160

Answer 1

5+х+7х=61
5+8х=61
8х=61-5
8х=56
х=56:8
х=7
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(7х-54)+32=160
7х-54+32=160
7х=160-+54-32
7х=182
х=182:7
х=26