Bio
mathematics tutor. please see my channel - https://www.youtube.com/channel/UCO7IvHEw2UJlB8M6nnzyiMA
Solving Systems of Equations - Substitution Method - https://www.youtube.com/watch?v=onrlvgDFA0A
RADIUS diameter circumference Pi of a CIRCLE - https://www.youtube.com/watch?v=U_MPykYjNYw
dividing FRACTIONS and mixed NUMBERS - https://www.youtube.com/watch?v=d1lLzN01f5g
solving basic EQUATIONS - https://www.youtube.com/watch?v=X2MhezEkOJk