I need help how to figure out
2a-6c when a = -1/3 and c = 3/4
2(-1/3)-6(3/4)=-31/6
and if you the answer in decimal then it is -5.16666667.
Check my work
i need help like for you to show the work so i can figure it out i know how to replace the letters with the fractions but i don't know how to figure it out past there.
ana has shown you the first step and the correct answer. You need to put the fractions in common denominator form and add them.
-2/3 -18/4 = -8/12 -54/12 = -62/12
= -31/6 = -5 1/6
To find the value of 2a-6c when a = -1/3 and c = 3/4, you can substitute these values into the equation and simplify the expression.
Step 1: Substitute the values of a and c into the equation.
2a-6c = 2(-1/3) - 6(3/4)
Step 2: Simplify the expression using basic arithmetic operations.
= (-2/3) - 18/4
Step 3: Find a common denominator for the fractions.
= (-2/3) - (18/4) * (3/3)
Step 4: Perform the necessary arithmetic operations.
= (-2/3) - 54/12
= (-2/3) - 27/6
= (-2/3) - 9/2
Step 5: Again, find a common denominator.
= (-2/3) * (2/2) - (9/2) * (3/3)
= (-4/6) - (27/6)
= (-4 - 27)/6
= -31/6
So, when a = -1/3 and c = 3/4, the value of 2a-6c is -31/6.