Question

0.3х+1.7=12 1.3х+1.4х=0.81 6х-2.5х=6.9

Answer 1

Объяснение:

0.3х+1.7=12

0,3х=10,3

х=3/103

1.3х+1.4х=0.81

2,7х=0,81

х=0,3

6х-2.5х=6.9

3,5х=6,9

х=69/35=1 34/35

Answer 2

To solve these equations for x, you can follow these steps:

1. Solve the first equation: 0.3x + 1.7 = 12 Subtract 1.7 from both sides to isolate the variable x: 0.3x = 12 - 1.7 0.3x = 10.3

   Now, divide both sides by 0.3 to solve for x: x = 10.3 / 0.3 x = 34.3333...

2. Solve the second equation: 1.3x + 1.4x = 0.81 Combine like terms on the left side: 2.7x = 0.81

   Now, divide both sides by 2.7 to solve for x: x = 0.81 / 2.7 x = 0.3

3. Solve the third equation: 6x - 2.5x = 6.9 Combine like terms on the left side: 3.5x = 6.9

   Now, divide both sides by 3.5 to solve for x: x = 6.9 / 3.5 x = 1.9714...

So, the solutions for the three equations are:

1. x ≈ 34.3333...
2. x = 0.3
3. x ≈ 1.9714...