Question

(x-50)*6+70=490 5450:(204-5*x)=50

Answer 1

Ответ:

Пошаговое объяснение:

(x-50)*6+70=490

(х-50)*6=490-70

(х-50)*6=420

х-50=420:6

х-50=70

х=70+50

х=120

5450:(204-5*x)=50

204-5x=5450:50

204-5x=109

5х=204-109

5х=95

х=95:5

х=19

Answer 2

To solve the equations:

1. (x-50)*6+70=490

First, we'll simplify the left-hand side of the equation by using the distributive property:

6x - 300 + 70 = 490

Combining like terms, we get:

6x - 230 = 490

Now, we'll isolate the variable term by adding 230 to both sides of the equation:

6x = 720

Finally, we'll solve for x by dividing both sides by 6:

x = 120

Therefore, the solution to the first equation is x = 120.

2. 5450:(204-5*x)=50

First, we'll simplify the left-hand side of the equation by performing the division:

5450 / (204 - 5x) = 50

We can then cross-multiply to eliminate the fraction:

5450 = 50(204 - 5x)

Expanding the right-hand side, we get:

5450 = 10200 - 250x

Subtracting 10200 from both sides, we get:

-4750 = -250x

Dividing both sides by -250, we get:

x = 19

Therefore, the solution to the second equation is x = 19.

Overall, the system of equations has two solutions: x = 120 and x = 19.