Question

texto com rima externa

Answer 1

Resposta:

$3) \: \: a) \\ ax + b \\ 2.60x + 4.80 \\ \\ b) \: substituicao \\ \\ 2.60 \times (14.50) + 4.80 \\ 37.70 + 4.80 = \\ 42.50 \: reais$