Question

plz answer this questions plz plz plz plz plz​

Answer 1

Step-by-step explanation:

$1. \: \: \: \: 7c = 140 = > c = 20 \\ 2d = 7c = > d = \frac{140}{2} = 70 \\ \\ \\ 2. \: \: 3c + 7c = 180 = > c = 18$

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