Question

5.6z-2z-0.7z+2.65=7+5.8

Answer 1

Ответ:

3,5

Пошаговое объяснение:

5,6z - 2z - 0,7z + 2,65 = 7 + 5,8

2,9z + 2,65 = 12,8

2,9z = 12,8 - 2,65

2,9z = 10,15

z = 10,15 : 2,9

z = 3,5

Answer 2

Let's simplify the equation step by step:

5.6z - 2z - 0.7z + 2.65 = 7 + 5.8

Combine the z terms on the left side of the equation:

(5.6 - 2 - 0.7)z + 2.65 = 7 + 5.8

Combine the constants on both sides of the equation:

(5.6 - 2 - 0.7)z + 2.65 = 12.8

Simplify the arithmetic:

2.9z + 2.65 = 12.8

Now, we'll isolate the term with z by subtracting 2.65 from both sides of the equation:

2.9z + 2.65 - 2.65 = 12.8 - 2.65

This simplifies to:

2.9z = 10.15

To solve for z, we divide both sides of the equation by 2.9:

(2.9z)/2.9 = 10.15/2.9

This simplifies to:

z = 3.5

Therefore, the value of z that satisfies the equation is z = 3.5.