\(1960+1968-\left\{1960+1995-\left[1990+\left(1995-1968\right)\right]\right\}\)

\(=1960+1968-\left\{1960+1995-\left[1990+27\right]\right\}\)

\(=1960+1968-\left\{1960+1995-2017\right\}\)

\(=1960+1968-\left\{3955-2017\right\}\)

\(=1960+1968-1938\)

\(=3928-1938\)

\(=1990\)
\(\text{Hok tốt! }\)

\(\text{@Kaito Kid}\)

118 + 107 - ( 118 - 93 ) - 50

= 118 + 107 - 118 + 93 - 50

= (118 - 118) + (107 + 93) - 50

= 0 + 200 - 50

= 200 - 50

= 150

HT và $$$

    118+107-(118-93)-50

=225-25-50

=200-50

=150

\(2x-5=2x-2-3=2\left(x-1\right)-3⋮\left(x-1\right)\Leftrightarrow3⋮\left(x-1\right)\)

\(\Leftrightarrow x-1\inƯ\left(3\right)=\left\{-3,-1,1,3\right\}\Leftrightarrow x\in\left\{-2,0,2,4\right\}\).

có 2 đáp án nha có bn nào tìm đc ko

1/ (-37) + 14 + 26 + 37

=[(-37)+37]+(14+26)

=0+40

=40

2/ (-24) + 6 + 10 + 24

=[(-24)+24]+6+10

=0+16

=16

3/ 15 + 23 + (-25) + (-23)

=(23-23)+(15-25)

=0+(-10)

=-10

4/ 60 + 33 + (-50) + (-33)

=(60-50)+(33-33)

=10+0

=10

5/ (-16) + (-209) + (-14) + 209

=[(-16)+(-14)]+[(-209)+209]

=-30+0

=-30

6/ (-12) + (-13) + 36 + (-11)

=[(-12)+(-13)+(-11)]+36

=(-36)+36

=0

7/ -16 + 24 + 16 – 34

=(16-16)+(24-34)

=0+(-10)

=-10

8/ 25 + 37 – 48 – 25 – 37

=(25-25)+(37-37)-(48+25)

=0+0-73

=-73

9/ 2575 + 37 – 2576 – 29

=(2575-2576)+(37-29)

=(-1)+8

=7

\(ƯC\left(-15;-12\right)=\left\{3;-3\right\}\)

# Kukad'z Lee'z

Ước chung của  \(-15\)  và  \(-12\)  là :

\(\text{Ư}\left(-15\right)=\left\{\pm1;\pm3;\pm5;\pm15\right\}\text{ }\text{ }\)

\(\text{Ư}\left(-12\right)=\left\{\pm1;\pm2;\pm3;\pm4;\pm6;\pm12\right\}\)

\(\rightarrow\text{Ư}\left(-15;-12\right)=\left\{\pm1;\pm3\right\}\)