Question

4a-2 sobre 3 =5(a+3) sobre 2.​

Answer 1

Olá!

$\dfrac{4a-2}{3} ~=~\dfrac{5\cdot(a+3)}{2} \\ \\ \\ \dfrac{4a-2}{3} ~=~\dfrac{5a+15}{2} \\ \\ \\ 2\cdot(4a-2)~=~3\cdot (5a+15)\\ \\ 8a-4~=~15a+45\\ \\ 8a-15a~=~45+4\\ \\ -7a~=~49~~~\cdot (-1)\\ \\ a=-\dfrac{49}{7} \\ \\ \\ \boxed{a=-7}$

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