Question

2,7-3x=1,3 2,5y=4. 54:y+7,5=10,3 0,71p+0,29p=4,08 ​

Answer 1

2,7-3x=1,3

3x=1,4

x=0,4(6)

Ответ:0,4(6)

2,5y=4

y=1, 6

Ответ:1,6

54:y+7,5=10,3

54:y=2,8

y=19,286

Ответ:19,286

0,71p+0,29p=4,08

1p+p=4,08

2p=4,08

p=2,04

Ответ:2,04

Answer 2

To solve each equation, we'll isolate the variable on one side of the equation. Let's go through each one step by step:

1. 2 + 7 - 3x = 1.3 Subtract 2 from both sides: 7 - 3x = -0.7 Subtract 7 from both sides: -3x = -0.7 - 7 -3x = -7.7 Finally, divide by -3 to solve for x: x = -7.7 / -3 x = 2.5666667 (rounded to 7 decimal places) or approximately x = 2.57

2. 2.5y = 4 Divide by 2.5 to solve for y: y = 4 / 2.5 y = 1.6

3. 54 : y + 7.5 = 10.3 Subtract 7.5 from both sides: 54 : y = 10.3 - 7.5 54 : y = 2.8 Now, divide 54 by 2.8 to solve for y: y = 54 / 2.8 y = 19.2857143 (rounded to 7 decimal places) or approximately y = 19.29

4. 0.71p + 0.29p = 4.08 Combine the p terms on the left side: 1p = 4.08 Simplify: p = 4.08

So, the solutions are:

1. x = 2.57
2. y = 1.6
3. y = 19.29
4. p = 4.08