Question

9х+50=86; 8х+7х-х=42; 

Answer 1

9х=86-50
9х=36
х=36/9
х=4

Answer 2

9x=86-50
9x=36
x=36:9
x=4

8x+7x-x=42
14x=42
x=42:14
x=3

Answer 3

To solve the equations, let's take them one at a time:

Equation 1: 9x + 50 = 86

To isolate the variable x, we'll start by subtracting 50 from both sides:

9x + 50 - 50 = 86 - 50

This simplifies to:

9x = 36

Next, divide both sides of the equation by 9 to solve for x:

(9x)/9 = 36/9

x = 4

So, the solution for Equation 1 is x = 4.

Equation 2: 8x + 7x - x = 42

To solve this equation, let's combine the like terms on the left side:

8x + 7x - x = 42

(8x + 7x - x) simplifies to 14x - x:

14x - x = 42

Now, we can simplify further:

13x = 42

To solve for x, divide both sides of the equation by 13:

(13x)/13 = 42/13

x = 42/13

So, the solution for Equation 2 is x = 42/13 (or approximately 3.23).