5x - 7 * 5x-2 = 90 3x+1+3=210 4x+2/3 + 7 * 2x+1 = 4

Question

5x - 7 * 5x-2 = 90

3x+1+3=210

4x+2/3 + 7 * 2x+1 = 4

Answer 1

5х - 35х - 2 = 90

-30х = 92

30х = -92

х = 3,07.

Ответ: х = 3,07.

 

3х + 1 + 3 = 210

3х = 206

х = 68,67

Ответ: х = 68,67

 

4х + 14х + 1 2/3 = 4

18x = 5 2/3.

18х = 17/3

х = 0,94/3 = 0,313

Ответ: х = 0,313.

Answer 2

5х - 35х - 2 = 90
-30х = 92
х = 3,07.




3х + 1 + 3 = 210
3х = 206
х = 68,67




4х + 14х + 1 2/3 = 4
18x = 5 2/3.
х = 0,94/3 = 0,313