Question

[vũ trần bảo linh]

27 . 65 + 27 . 35 + 300

3838 : [( 190 - 6 . 5 mũ 2 ) : 4 + 3 }

2022 - x = 2021

26 + 14 : ( x - 5 ) = 33

2 . 3 mũ x + 38 = 92

Answer 1

[Nguyễn Nhân Dương]

a)\(27.65+27.35+300=27.\left(65+35\right)+300\)

\(=27.100+300=2700+300=3000\)

b)\(3838:\left[\left(190-6.5^2\right):4+3\right]\)

\(=3838:\left[\left(190-6.25\right):4+3\right]\)

\(=3838:\left[\left(190-150\right):4+3\right]\)

\(=3838:\left[40:4+3\right]=3838:\left[10+3\right]\)

\(=3838:13=\dfrac{3838}{13}\)

c)\(2022-x=2021\)

\(x=2022-2021=1\)

d)\(26+14:\left(x-5\right)=33\)

\(14:\left(x-5\right)=33-26=7\)

\(x-5=14+7=2\)

\(x=2+5=7\)

e)đề hỏi làm j thế bạn