It doesn't explain why you multiplied 7×4 and 5×2 if those numbers were tge denominators. You don't explain why you[..]
I don't understand.
how do I type an exponent
How does the negative 7 become a positive 7.
rather need help with the restrictions
I need step by step
then to the 5th step to the 6th
how do you go from the 3rd step to the forth step?
How do you arrive at the last step. Are you multiplying the step above it by (-1)? Thanks
i do not understand how 16 x and 4x is 12 i thought 2 positive signs would make it 20