/-5/+(-19)+18=4

/11/-4-57=-50

bạn viết trị tuyệt đối bằng dấu chia cho dễ thấy đi, như v khó hiểu quá

(x + 1) - 1 = 2014

x + 1 - 1 = 2014

x + 1 = 2014 + 1

x + 1 = 2015

x   = 2015 - 1

x = 2014

tích cho mình nha

3y + 1/2y + 1/4y = \(1\frac{1}{2}\)

15/4y = \(1\frac{1}{2}\)

y = \(1\frac{1}{2}:\frac{15}{4}=\frac{3}{2}:\frac{15}{4}=\frac{2}{5}\)

a)   Q=13a+19b+4a-2b

      Q=(13a+4a)+(19b-2b)

      Q=17a+17b

      Q=17(a+b)

      Q=17*100

      Q=1700

 Ta vó: | x | < 6  => x \(\in\){ - 5; -4; -3; -2; -1; 0; 1; 2; 3; 4; 5}

Tổng cần tính là:

(- 5 ) + ( - 4 ) + ( - 3 ) + ( -2 ) + ( -1 ) + 0 + 1 +2 + 3 + 4 + 5 = 0

\(\left(x-\frac{1}{4}\right)\div\frac{4}{3}=\frac{1}{2}\)

\(\Leftrightarrow x-\frac{1}{4}=\frac{1}{2}\times\frac{4}{3}\)

\(\Leftrightarrow x-\frac{1}{4}=\frac{4}{6}\)

\(\Leftrightarrow x-\frac{3}{12}=\frac{8}{12}\)

\(\Leftrightarrow x=\frac{8}{12}+\frac{3}{12}\)

\(\Leftrightarrow x=\frac{11}{12}\)

\(\left(X-\frac{1}{4}\right):\frac{4}{3}=\frac{1}{2}\)

\(\Rightarrow X-\frac{1}{4}=\frac{1}{2}.\frac{4}{3}\)

\(\Rightarrow X-\frac{1}{4}=\frac{2}{3}\)

\(\Rightarrow X=\frac{2}{3}+\frac{1}{4}\)

\(\Rightarrow X=\frac{11}{12}\)