Question

(х+9)∙ 6=42; (х-15) ∙11=88; (24-х) ∙15=90; (х-18) ∙8=96; (х-10) ∙14=40.

Answer 1

x= -2

x= 23

x= 18

x= 30

x= 90/7

Answer 2

Ответ:

• 42:6=7      7-9=-2       х=-2
• 88:11=8      8+15=23   х=23
• 90:15=6     24-6=18       х=18
• 96:8=12   12+18=30  х=30
• 40:14=20/7=2 6/7    10+2 6/7=12 6/7     х=12 6/7

Answer 3

To solve these equations, you'll need to isolate the variable 'x' in each equation. Here's how you can solve each one step by step:

1. (x + 9) * 6 = 42

First, divide both sides by 6 to isolate (x + 9):

(x + 9) = 42 / 6 (x + 9) = 7

Now, subtract 9 from both sides to solve for 'x':

x = 7 - 9 x = -2

So, the solution to the first equation is x = -2.

2. (x - 15) * 11 = 88

First, divide both sides by 11:

(x - 15) = 88 / 11 (x - 15) = 8

Now, add 15 to both sides to solve for 'x':

x = 8 + 15 x = 23

The solution to the second equation is x = 23.

3. (24 - x) * 15 = 90

First, divide both sides by 15:

(24 - x) = 90 / 15 (24 - x) = 6

Now, subtract 24 from both sides to solve for 'x':

-x = 6 - 24 -x = -18

Multiply both sides by -1 to isolate 'x':

x = 18

The solution to the third equation is x = 18.

4. (x - 18) * 8 = 96

First, divide both sides by 8:

(x - 18) = 96 / 8 (x - 18) = 12

Now, add 18 to both sides to solve for 'x':

x = 12 + 18 x = 30

The solution to the fourth equation is x = 30.

5. (x - 10) * 14 = 40

First, divide both sides by 14:

(x - 10) = 40 / 14 (x - 10) = 20/7

Now, add 10 to both sides to solve for 'x':

x = 20/7 + 10

To make it a fraction, you can find a common denominator:

x = (20/7 + 70/7) x = (20 + 70)/7 x = 90/7

So, the solution to the fifth equation is x = 90/7.

You now have solutions for all five equations:

1. x = -2
2. x = 23
3. x = 18
4. x = 30
5. x = 90/7 (or approximately 12.857)