Question

ok Express 2 by minus 7 as a rational number with numerator 42 or -28​

Answer 1

2÷(-7)

we should multiply numerator and denominator by (-6), so we get denominator as 42

{2×(-6)} ÷ {(-7×(-6)}

=(-12) ÷ 42 which is -12/42

so now we get 42 as denominator