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94= 2×{(5x+2)+(2x+3)}
94= 2× (5x+2+2x+3)
94= 2×(7x+5)
94= 14x+10
94-10=14x
84=14x
x= 84÷14= 6
Panjang persegi panjang= 5x+2 = 5×6+2=32
lebar persegi panjang= 2x+3 = 2×6+3 = 15
10x+4+4x+6=94
10x+4x+4+6=94
14x+10=94
14x=94-10
14x=84
x=84/14=6
(5x+2)=5×6+2=32cm