Problem3: When A = 5x + 4 and B = 9x – 6 what is the value of B-A?
Problem 3 : When A = 5x + 4 and B = 9x – 6 what is the value of B-A?
This is simple algebra subtraction problem!
We solve it;
Putting value of B and A,
On left hand side write first bracket term as it is! Take minus sign inside the second bracket terms !
Re-arranging ‘x’ terms and non ‘x’ terms;
Subtracting ‘x’ terms and adding non-‘x’ terms (Because both non ‘x’ terms have same -ve sign we will actually add them instead!
So, we get;