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2x +3x + 7x = 300
12x=300
x = 300/12
x = 25
2x= 2×25 = 50
3x= 3×25=325
7x=7×25=725
area of triangle = 1/2 × base × height
1/2 × 2x+3x
1/2 ×50+325 = 1/2 × 375
=187.5
2x +3x + 7x = 300
12x=300
x = 300/12
x = 25
2x= 2×25 = 50
3x= 3×25=325
7x=7×25=725
area of triangle = 1/2 × base × height
1/2 × 2x+3x
1/2 ×50+325 = 1/2 × 375
=187.5
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