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melisa1 [442]
3 years ago
5

I need help with 9,11,12, and 13

Mathematics
1 answer:
Alex_Xolod [135]3 years ago
8 0
#9
since LJ = LK + KJ, replace the letters with the corresponding equations. You'd get:
LJ = (7x-10) + 28
LJ = 7x + 18
Do you need an integer or is that okay?^
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