1) -1/6x + 1/4
in this case, there is nothing to do, the expression is as simple as it can be
2) 2/3 - (-8y/9)
2) 2/3 - (-8y/9)
here , we can only clear the parenthesis; we will have 2/3 + 8y/9
3) 5/8x divide by 7/16
when fractions are divided, we invert the divisor and multiply
in this case, the divisor is 7/16, which, when it is inverted, is 16/7
then, we have 5/8x · 16/7
we then multiply the numerators (5 · 16), and the denominators (8 · 7) to get 80x/56
we then simplify (divided the numerator and denominator by 8) to get 10x/7
