Question

7x - 9 = 5 и х + 3b = - 10 срочно​

Answer 1

Ответ:

7х - 9 = 5

7х = 14

х = 2

х + 3b = -10

х = -10 - 3b.

Пошаговое объяснение:

Answer 2

To solve the system of equations, we need to find the values of variables 'x' and 'b' that satisfy both equations simultaneously.

Equation 1: 7x - 9 = 5

Let's solve for 'x' in Equation 1:

Step 1: Add 9 to both sides to isolate the term with 'x'. 7x - 9 + 9 = 5 + 9

Step 2: Simplify both sides of the equation. 7x = 14

Step 3: Divide both sides by 7 to solve for 'x'. x = 14 / 7 x = 2

Now, we have the value of 'x', which is x = 2.

Equation 2: x + 3b = -10

Now, substitute the value of 'x' into Equation 2 and solve for 'b':

2 + 3b = -10

Step 1: Subtract 2 from both sides to isolate the term with 'b'. 2 + 3b - 2 = -10 - 2

Step 2: Simplify both sides of the equation. 3b = -12

Step 3: Divide both sides by 3 to solve for 'b'. b = -12 / 3 b = -4

Now, we have the values of both 'x' and 'b'. The solution to the system of equations is x = 2 and b = -4.