Isolate for x
First expand the bracket to
12x^2 - 15x = 12x - 5
Move everything to one side
12x^2 - 27x + 5
Use quadratic formula and sub in values
X = 2.046989
X = 0.203610
Answer: Option 'D' is correct.
Explanation:
Since we have given that
"Three times the number m plus twice the quantity n plus 5 is equal to 20"
So, Equation becomes
As it is said that
three times the number m i.e.
twice the quantity n plus 5 i.e.
Plus both the quantity i.e.
and make them equal to 20 i.e.
Hence, Option 'D' is correct.
= 2x + 11
Steps
(8x+9) -(6x-2)
Remove ( a ) = a
8x + 9 - 6x + 2
Simplify
8x+ 9 - 6x + 2: 2x + 11
= 2x + 11 <----- your answer
Please tell me if this was right