Question

0,4(x+5)-1,7=0,3(x-5)+0,7x​

Answer 1

Ответ:

0,4(x+5)-1,7=0,3(x-5)+0,7x

0,4х+2-1,7=0,3х-1,5+0,7х

0,4х+0,3=х-1,5

0,4х-х= -1,5-0,3

-0,6х= -1,8

х=3

Answer 2

Решение:

0,4(x+5)-1,7=0,3(x-5)+0,7x​

0,4x + 2 - 1,7 = 0,3x - 1,5 + 0,7x

0,4x + 0,3 = x - 1,5

0,4x - x = -1,5 - 0,3

-0,6x = -1,8

x = 3.

Ответ: x = 3.

Answer 3

To solve the equation 0.4(x + 5) - 1.7 = 0.3(x - 5) + 0.7x, you can follow these steps:

Step 1: Distribute the constants and variables on both sides of the equation.

0.4x + 0.4(5) - 1.7 = 0.3x - 0.3(5) + 0.7x

Step 2: Simplify both sides of the equation by performing the multiplications and additions.

0.4x + 2 - 1.7 = 0.3x - 1.5 + 0.7x

Step 3: Combine like terms on each side of the equation.

0.4x - 1.7 = 0.3x + 0.7x - 1.5

Step 4: Combine the x-terms on the right side of the equation.

0.4x - 1.7 = 1.0x - 1.5

Step 5: Subtract 0.4x from both sides of the equation to isolate the x-terms on one side.

0.4x - 0.4x - 1.7 = 1.0x - 0.4x - 1.5

-1.7 = 0.6x - 1.5

Step 6: Add 1.5 to both sides of the equation to isolate the variable term.

-1.7 + 1.5 = 0.6x - 1.5 + 1.5

-0.2 = 0.6x

Step 7: Divide both sides by 0.6 to solve for x.

(-0.2) / 0.6 = (0.6x) / 0.6

-0.333... = x

So, the solution to the equation is approximately x ≈ -0.3333 (rounded to four decimal places).