[latex] \frac{4}{5} [/latex] - [latex] \frac{1}{2} [/latex] multiply 5x2 and 4x2 ; multiply 1x5 and 2x5 [latex] \frac{8}{10} [/latex] - [latex] \frac{5}{10} [/latex] = [latex] \frac{3}{10} [/latex] is your answer

[latex] \frac{4}{5}- \frac{1}{5} [/latex][latex]= \frac{3}{10} [/latex] Hoped is help ya :3 have a beautiful day :3