Ответ:
(4х+6)/2=10
4х+6=20
4х=14
х=3.5
(3.5×4 +6 ) /2 = 10
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Ответ:
(4х+6)/2=10
4х+6=20
4х=14
х=3.5
(3.5×4 +6 ) /2 = 10