Question

А)1-4х:5=1 б) 3х-10:2=-1 в) х+3:10=1/5

Answer 1

A)1-4x:5=1

-4x:5=0

-4/5x=0

X=0

Б)3x-10:2=-1

3x+1= 10:2

3x+1= 5

3x=-1+5

3x= 4

X=4/3

B)x+3:10=1/5

x+1/5=3:10

x+1/5=0,3

X=1/5-3/10

X=-1/10

Answer 2

Let's solve each equation step by step:

a) 1 - 4x/5 = 1

To isolate the variable x, we can start by subtracting 1 from both sides:

-4x/5 = 0

Next, we can multiply both sides by 5 to eliminate the fraction:

-4x = 0

Finally, divide both sides by -4:

x = 0

Therefore, the solution to the equation 1 - 4x/5 = 1 is x = 0.

b) 3x - 10/2 = -1

To solve this equation, we'll begin by simplifying the left side:

3x - 5 = -1

Next, let's isolate the variable x by adding 5 to both sides:

3x = 4

Finally, divide both sides by 3:

x = 4/3

Thus, the solution to the equation 3x - 10/2 = -1 is x = 4/3.

c) x + 3/10 = 1/5

To solve this equation, let's start by subtracting 3/10 from both sides:

x = 1/5 - 3/10

To combine the fractions on the right side, we need a common denominator, which is 10:

x = 2/10 - 3/10

Now, subtract the numerators:

x = -1/10

Therefore, the solution to the equation x + 3/10 = 1/5 is x = -1/10.