3 — :3 —= 1 — :2238 — :1 —= 1 — :7247 — :3 —= 1 — :8461 — :1 —= 1 — :7578 — :7 —= 1 — :983 xxxxxx-—1x = 8.573× 6- 3.2x = 9.5 4× 9- 5x = 11 —1 x- 7 =7.552 —= 2.5 — x0.1
1 — : 9 — = 1 — : 4 8 5 4 — : 3 — = 1 — : 5 2 2 4 — : 5 — = 1 — : 3 6 3 3 — : 5 — = 1 — : 4 4 5 1 — : 8 — = 1 — : 4 7 7 x x x x x x+ —1 x = 8 49× 7 - 0.4x = 1.8 6× 8 - 2x = 2.55 —1 x + 6 =6.4 28 — = 8 — x 0.2
8 — : 6 — = 1 — : 7 5 3 6 — : 1 — = 1 — : 7 2 5 6 — : 3 — = 1 — : 7 4 7 3 — : 3 — = 1 — : 2 2 9 1 — : 1 — = 1 — : 5 3 4 x x x x x x- —1 x = 28.5 26× 8 - 5x = 8.3 8× 7 - 6.4x = 26 —1 x - 7 =7.9 429 — = 0.2 — x 0.4
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