1) subtract the length from the width, if the length is 3k + + 4m + 8 cm and the width is k - 2m - 7 cm
a. -2k - 6m - 15cm
b. -2k - m + 1cm
c. -2k + 6m + 9cm
d. -2k - 6m + 15cm

2)what is the difference of the length and the width, if the length is 3m² + 6n - 8cm and the width is 2m² + 3n - 11cm?
a. m² + 3n + 3cm
b. m² + 9n - 3cm
c. 2m² + 9n + 3cm
d. 2m² + 3n 3 cm.
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