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38 = 2(3x + -2 + 2x + 1)
38 = 2(5x - 1)
38 = 10x - 2
38 + 2 = 10x
40 = 10x
40 : 10 = x
4 = x
p = 3x - 2 = 3.4 - 2 = 12 - 2 = 10 m
l = 2x + 1 = 2.4 + 1 =8 + 1 = 9 m
luas = p x l
luas = 10m x 9 m
luas = 90 m²
2((3x-2)+(2x+1))=38
2(3x-2+2x+1)=38
2(5x-1)=38
10x-2=38
10x=38+2
10x=40
x=40:4
x=4
Panjang= (3x-2)
= 3.4-2
= 12-2= 10
Lebar= (2x+1)
= 2.4+1
=8+1= 9
Luas= P×L
= 10×9
= 90 Meter
*MAAF KALAU SALAH*