syolanda syolanda

19-08-2017
Mathematics

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if ax +3=7-bx what is x expressed in terms of a and b

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texaschic101 texaschic101

19-08-2017

ax + 3 = 7 - bx .....add bx to both sides
ax + bx + 3 = 7 ...subtract 3 from each side
ax + bx = 7 - 3
ax + bx = 4 ....factor out x
x(a + b) = 4 ...divide both sides by (a + b)
x = 4 / (a + b) <==

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