Question

1)вычислите 6-4/5,2решите уравнения 7(х-15)=63

Answer 1

7(x-15)=63
7x-105=63
7x=63+105
7x=168
x=168/7
x=24

6-$frac{4}{5}$ = $frac{6}{1} - frac{4}{5} = frac{30-4}{5} = frac{26}{5} =5 frac{1}{5} =5,2$