Explicación paso a paso:
(3a-2)x+10=45
(3a-2).5+10=45
(3a.5)-(2.5)+10=45
15a-10+10=45
15a=45+10-10
15a=55-10
a=45:15
a=3
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Explicación paso a paso:
(3a-2)x+10=45
(3a-2).5+10=45
(3a.5)-(2.5)+10=45
15a-10+10=45
15a=45+10-10
15a=55-10
a=45:15
a=3