999 x 999 = 998001

124 x 765 = 94860

dùng mt nhá bro

\(x-\left(-18\right)=134-\left(34-91\right)\)

⇔\(x+18=134-34+91\)

⇔\(x+18=191\)

⇔\(x=173\)

\(4x+\left(-188\right)=-358+\left(458-124\right)\)

⇔\(4x-188=-358+458-124\)

⇔\(4x-188=-24\)

⇔\(4x=164\)

⇔\(x=41\)

+) x-(-18) = 134 - (34-91)

<=> x +18 = 191

<=> x= 173

+) 4x+(-188) = -358 + (458 - 124)

<=> 4x =164

<=>x =41

41 nha

a. 113 + 142 + x = 999 – 103

255 + x = 896

x = 896 – 255

x = 641

b. x – 124 = 400 + 56

x – 124 = 456

x = 456 + 124

x = 580

c. 963 – x = 869 – 28 : 4

963 – x = 869 – 7

963 – x = 862

x = 963 – 862

x = 101

\(134\div\left(x-3\right)=35+160\div5\)

\(134\div\left(x-3\right)=35+32\)

\(134\div\left(x-3\right)=67\)

                 \(x-3=134\div67\)

                  \(x-3=2\)

                  \(x=3+2\)

                  \(x=5\)

hok tốt

134/(x-3)=37

x-3=134/37

x-3=2

=>x=5

134 : (x - 3) = 35 + 160 : 5

134 : (x - 3) = 35 + 32

134 : (x - 3) = 67

          x - 3 = 134 : 67

          x - 3 = 2

               x = 2 +3 

               x = 5

Chúc bạn học tốt!

999-x+500-100=105

999-x+500=105+100

999-x+500=205

999-x=205-500

999-x=295

x=999-295

x=704

k mik mik k lai

704

tk mình nha

999-x+500-100=105

(999 - 100 ) - x + 500 = 105

899 - x+ 500 = 105

(899+500) - x = 105

1399 - x = 105

x = 1294

vậy: x =1294

a, 134: [x-3] = 35 + 160: 5

134 : [x-3] = 35 + 32

134 : [x-3] = 67

x - 3 = 134: 67 

x-3 = 2

x = 2 + 3

x = 5

Bài b bạn ghi lại đề nha

a,134:(x-3)=35+160:5

=> 134:(x-3)=35+32

=> 134:(x-3)= 67

=> x - 3 = 134 : 67

=> x-3 = 2

=> x = 2 + 3 = 5

b,[(10-x).2]:3-2=3

=> [(10-x).2]:3 = 3+2

=> [(10-x).2]:3 = 5

=> (10 -x) . 2 = 5.3

=> (10 - x).2 = 15

=> 10-x = 15: 2

=> 10 - x =7,5

=> x = 10 - 7,5 = 2,5

a,134:(x-3)=35+160:5

134:(x-3)=35+32

134:(x-3)=67

      (x-3)=134:67

       x-3 =2

          x =2+3

          x =5

b,[(10-x).2+]:3-2=3

[(10-x).2+]:3=3+2

[(10-x).2+]:3=5

(10-x).2+=5.3

(10-x).2+=15

(10-x) =15:2

10-x=7,4

    x=10-7,4

    x=2,6

1: \(=-24\left(45-5\right)=-24\cdot40=-960\)

2: \(=-134\left(1-51+48\right)=-134\cdot\left(-2\right)=268\)

3: \(=124\left(1-52+47\right)=124\cdot\left(-3\right)=-372\)