fractions are killing me, help
If it's this:
-4/(5x) = 16/15
You can cross-multiply:
-4 * 15 = 5x * 16
-60 = 80x
Divide by 80:
-60/80 = x
x = -3/4
If it's this:
(-4/5)x = 16/15
As stated above by Bill:
Multiply both sides by -5/4.
x = (16/15) (-5/4)
Cancel 16 and the 4.
x = (4/15)(-5/1)
Cancel the 15 and the -5
X = (4/3)(-1/1)
x = -4/3
Notice the answers are reciprocals depending on whether the x is in the numerator or the denominator.
Helpful suggestion:
Please make liberal use of parentheses when posting your questions.
Hope this helps.
Jason
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