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2x - x > 7 + 3
x > 10
d₁ = 2 (10) - 3 = 17 cm
d₂ = 10 + 7 = 17 cm
luas minimum = 1/2 x d₁ x d₂
= 1/2 x 17 x 17
= 144,5 cm²
semoga membntu ya :)
2x-x=7+3
x=10
d1=2x-3=20-3=17
d2=x+7=17
luas=1/2x17x17=144.5