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Find the value of x if B is between A and C, AB=4x-9, BC= 3x+ 5, and AC=7

Find the value of x if B is between A and C, AB=4x-9, BC= 3x+ 5, and AC=7
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1 vote
Find the value of x if B is between A and C, AB=4x-9, BC= 3x+ 5, and AC=7

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User Marco Cerliani
by
7.5k points

1 Answer

3 votes
AB = 4 x - 9
BC = 3 x + 5
AC = 7

B is in between A and C. So AB + BC = AC

4x - 9 + 3 x + 5 = 7
7 x - 4 = 7 take -4 from LHS to the R H S (right hand side) it becomes +4
7 x = 7 + 4 = 11
x = 11/7 = 1.571

answered
User EvilTak
by
9.1k points
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