Matemática, perguntado por priscilasouza53, 4 meses atrás

A)3×+6=×-5 (×+2)
B)8×-3=5×+6
C)5×-4=2×+8?
Me ajudem pfv

Soluções para a tarefa

Respondido por CyberKirito
1

\Large\boxed{\begin{array}{l}\sf A)~\sf3x+6=x-5(x-2)\\\sf 3x+6=x-5x+10\\\sf 3x+5x-x=10-6\\\sf7x=4\\\\\sf x=\dfrac{4}{7}\end{array}}

\Large\boxed{\begin{array}{l}\rm B)~\sf 8x-3=5x+6\\\sf 8x-5x=6+3\\\sf 3x=9\\\sf x=\dfrac{9}{3}\\\\\sf x=3\end{array}}

\Large\boxed{\begin{array}{l}\rm C)~\sf 5x-4=2x+8\\\sf 5x-2x=4+8\\\sf 3x=12\\\sf x=\dfrac{12}{3}\\\\\sf x=4\end{array}}

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