6— : 11— = — :x1x+ — x = 32 7854 — :3 —= 1 — :3491 — :8 —= 1 — :57310— : 10— = 1 — :9941 — :1 —= 1 — :454xxxx 7
6× 6- 6.4x
5× 4- 2.5x
1 —1 x- 63
8 —= 1.6 — x0.6
= 5.1 = 3.5
=6.4
1 — : 4 1 — = — : x 1 x+ — x = 14 4 3 7 1 — : 4 — = 1 — : 2 3 7 1 — : 10 — = 1 — : 5 9 7 9 — : 1 — = 1 — : 8 3 5 4 — : 6 — = 1 — : 5 7 9 x x x x 4
6× 7 - 0.2x
3× 7 - 0.2x
1 —1 x - 42
1 — = 1 — x 0.4
= 7 = 3.5
=4.2
10 — : 3 — = 1 — : 9 4 6 1 — : 1 — = 1 — : 7 4 2 1 — : 7 — = 1 — : 7 6 3 9 — : 1 — = 1 — : 8 2 6 3 — : 5 — = 1 — : 2 6 3 x x x x x x- —1 x = 29 94× 8 - 5x = 2.5 6× 9 - 1.6x = 2.53 —1 x + 9 =9.7 219 — = 0.5 — x 0.4
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