: = 7 : 2
Anggap aja = 7x, = 2x
Jadi,
2( + ) = 99 2(7x+2x) = 99
2(9x) = 99
18x = 99
x =
Luas persegi:
38,5 × 11 = 423,5 cm²
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: = 7 : 2
Anggap aja = 7x, = 2x
Jadi,
2( + ) = 99
2(7x+2x) = 99
2(9x) = 99
18x = 99
x =
Luas persegi:
38,5 × 11 = 423,5 cm²