Answer:
(4x -14)/3
Step-by-step explanation:
Assuming you intend mixed number coefficients, only the coefficients of x can be combined.
(-2 1/4)x +(3 7/12)x -(4 2/3) = x(-2 1/4 +3 7/12) -(4 2/3)
The mixed numbers are added in the usual way.
(-2 1/4) +(3 7/12) = (-2 +3) +(-1/4 +7/12) = 1 +(-3/12 +7/12) = 1 4/12 = 1 1/3
So the expression simplifies to ...
(1 1/3)x -(4 2/3)
This might be better written as ...
(4x -14)/3
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<em>Comment on mixed numbers</em>
It is hard to write mixed numbers so they can be properly interpreted in an algebraic expression. In general, they are better written as improper fractions or as decimal numbers (if the decimal terminates).
3(x+2)-6x+6<0 "< is like equal sign bruv"
3x+6-6x+6<0 "do group so ( ) so multiply and bring everything else down"
-3x+12<0 "add all like terms so "3x-6x" and "6+6" since they cancel out you get "
-3x< 0-12 "to get rid of 12 you subtract 12 and subtract it from the other side so 0 aswell
-3x<-12 "you would end up with this"
-3x/-3 < -12/-3 "since dividing or multiplying by a negative you flip the arrow"
x > 4 "this is the answer"
Answer:
20160
Step-by-step explanation:
in order to find the number of possible essays you can choose from you have to divide the factorial of total no. of essays by the no of essay questions for an exam. ie 8!/ 2! which is 40320/2 = 20160
please mark brainliest
Answer:
3/10
Step-by-step explanation: