Question

3,8z+4.22z-3.02z-7.25=0

Answer 1

(3.8+4.22-3.02)z-7.25=0
5z-7.25=0
5z=0+7.25
5z=7.25
z=7.25:5
z=1.45

Answer 2

To solve this equation for z, we can simplify the left-hand side by combining the like terms and then isolate z by performing algebraic operations.

Starting with the given equation:

3.8z + 4.22z - 3.02z - 7.25 = 0

Combining the like terms on the left-hand side:

4.4z - 7.25 = 0

Adding 7.25 to both sides:

4.4z = 7.25

Finally, dividing both sides by 4.4:

z = 1.64886...

Therefore, the solution for z is approximately 1.64886.