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74 = 2 ( 7x + 5 + 3x + 2)
74 = 2(10x +7)
74= 20x + 14
74-14= 20x
60=20x
60/20 = x
3 cm = x
b) * panjang= 7x + 5 = 7(3) + 5 = 21 + 5 = 26
* lebar = 3x + 2 = 3(3) + 2 = 9 + 2 = 11
74 = 2(7x+5) +2(3x+2)
74 = 14x +10+6x+4
74 = 20x+14
74-14. = 20x
60. = 20x
x. = 3
b. panjang = 7(3)+5=26
lebar. =3(3)+2 = 11