34÷х-3=31 (х-5)×4=36 3х+х=8 7+х:7=8

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вопрос

To solve each of these equations, we will isolate the variable "x" in each equation.

34/х - 3 = 31
First, add 3 to both sides:
34/х = 34
Next, multiply both sides by x:
34 = 34x
Now divide by 34 to solve for x:
x = 1

(x-5)×4 = 36
First, divide both sides by 4:
x - 5 = 9
Next, add 5 to both sides:
x = 14

3x + x = 8
Combine like terms:
4x = 8
Divide by 4 to solve for x:
x = 2

7 + x/7 = 8
First, subtract 7 from both sides:
x/7 = 1
Next, multiply both sides by 7:
x = 7

So the solutions are: