juros simples

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Para encontrarmos o valor das parcelas e da entrada, realizaremos os cálculos abaixo:

\(\begin{align} & E=0,85x-170 \\ & p_1=\frac{x}{1,12} \\ & p_1=0,94x(6\cdot 2) \\ & p_2=\frac{x-200}{1,24} \\ & p_2=0,80x-161,29(6\cdot 4) \\ & p_3=\frac{x-400}{1,3} \\ & p_3=0,76x-307,6(6\cdot 5) \\ & \\ & 4800=3,36x-638,9x \\ & x=\$1614,36\\&\\&E=\$1202,20\\&p_1=\$1614,36\\&p_2=\$1414,36\\&p_3=1214,36\\\end{align}\ \)

Portanto, os valores das parcelas serão \(\boxed{\left\{ {\begin{array}{ccccccccccccccc} {{p_1} = \$ 1614,36} \\ {{p_2} = \$ 1414,36} \\ {{p_3} = \$ 1214,36} \end{array}} \right\}}\)