Question

Resolvendo 2a. (x + c) – 3ax = 3a. (x - 2c), na incógnita x, encontramos:​

Answer 1

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$\sf{2a\cdot(x+c)-3ax=3a\cdot(x-2c)}\\\sf2ax+2ac-3ax=3ax-6ac\\\sf2ax-3ax-3ax=-6ac-2ac\\\sf-4ax=-8ac\cdot(-1)\\\sf 4ax=8ac\\\sf x=\dfrac{\diagup\!\!\!8\diagdown\!\!\!ac}{\diagup\!\!\!4\diagdown\!\!\!a}\\\sf x=2c$