Question

X+20×8=2600 40×6+x=9400 x×(40:4)=12600 (190-90)×x=38600 x-560:7=20000 3090:10-x=209 x:(36+64)=543 19200:10:x=10

Answer 1

1)

х+160=2600

Х=2600-160

х=2440

2)

240+х=9400

х=9400-240

х=9160

3)

10*х=12600

х=12600/10

х=1260

4)

100х=38600

х=38600/100

х=386

5)

х-80=20000

х=20000+80

х=20080

6)

309-х=209

х=309-209

х=100

7)

х:100=543

х=543*100

х=54300

8)10х=19200/10

10х=1920

х=1920/10

х=192

х

Answer 2

Let's solve each of the equations step-by-step:

1. X + 20 × 8 = 2600 First, perform the multiplication: 20 × 8 = 160 Now, subtract 160 from both sides: X = 2600 - 160 X = 2440

2. 40 × 6 + X = 9400 Perform the multiplication: 40 × 6 = 240 Now, subtract 240 from both sides: X = 9400 - 240 X = 9160

3. X × (40 ÷ 4) = 12600 Perform the division: 40 ÷ 4 = 10 Now, divide both sides by 10: X = 12600 ÷ 10 X = 1260

4. (190 - 90) × X = 38600 Perform the subtraction: 190 - 90 = 100 Now, divide both sides by 100: X = 38600 ÷ 100 X = 386

5. X - 560 ÷ 7 = 20000 Perform the division: 560 ÷ 7 = 80 Now, add 80 to both sides: X = 20000 + 80 X = 20120

6. 3090 ÷ 10 - X = 209 Perform the division: 3090 ÷ 10 = 309 Now, subtract 309 from both sides: -X = 209 - 309 -X = -100 Multiply by -1 to solve for X: X = 100

7. X ÷ (36 + 64) = 543 Perform the addition: 36 + 64 = 100 Now, multiply both sides by 100: X = 543 × 100 X = 54300

8. 19200 ÷ 10 ÷ X = 10 Perform the first division: 19200 ÷ 10 = 1920 Now, divide 1920 by X: X = 1920 ÷ 10 X = 192

Please double-check the calculations and the solutions obtained for each equation.