pls tulong pls po malaking points po tinaya ko rito kaya pls seryosong answerer po

1. (10x - 1)cm
Solution:
= (6x + 2)cm + (3x + 1)cm + (x - 4)cm
= (10x - 1)cm
2. (18x + 20)cm
Solution:
P = 2L + 2W
P = 2(4x - 2)cm + 2(5x + 8)cm
P = (8x - 4)cm + (10x + 16)cm
P = (18x + 20)cm
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