Question

13х+9х+13=321;(7х-х)÷5=180 ​

Answer 1

13x+9x+13=321

22x=321-13

22x=308

x=14

$\frac{7x - x}{5} = \frac{180}{1} \\ 7x - x = 900 \\ 6x = 900 \\ x = 150$

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Answer 2

To solve the equation 13x + 9x + 13 = 321, you need to combine like terms and isolate the variable x. Here's the step-by-step solution:

1. Combine like terms on the left side of the equation: 13x + 9x + 13 = 321 (13x + 9x) + 13 = 321 22x + 13 = 321

2. Subtract 13 from both sides to isolate 22x: 22x + 13 - 13 = 321 - 13 22x = 308

3. Finally, divide both sides by 22 to solve for x: 22x / 22 = 308 / 22 x = 14

So, the solution to the first equation is x = 14.

Now, let's solve the second equation: (7x - x) ÷ 5 = 180.

1. Simplify the left side of the equation: (7x - x) ÷ 5 = 180 6x ÷ 5 = 180

2. To isolate 6x, multiply both sides by 5: (6x ÷ 5) * 5 = 180 * 5 6x = 900

3. Finally, divide both sides by 6 to solve for x: 6x / 6 = 900 / 6 x = 150

So, the solution to the second equation is x = 150.