5a-z=8

-2a+5z = -6

What is the answer

122 = 7 (z + 8) + - 5 (6 + z) >z = 48

Step-by-step explanation:

122 = 7 (8 + z) + - 5 (6 + z)

122 = (8 * 7 + z * 7) + - 5 (6 + z)

122 = (56 + 7z) + - 5 (6 + z)

122 = 56 + 7z + (6 * - 5 + z * - 5)

122 = 56 + 7z + (-30 + - 5z)

Reorder the terms:

122 = 56 + - 30 + 7z + - 5z

Combine like terms: 56 + - 30 = 26

122 = 26 + 7z + - 5z

Combine like terms: 7z + - 5z = 2z

122 = 26 + 2z

Solving

122 = 26 + 2z

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '-2z' to each side of the equation.

122 + - 2z = 26 + 2z + - 2z

Combine like terms: 2z + - 2z = 0

122 + - 2z = 26 + 0

122 + - 2z = 26

Add '-122' to each side of the equation.

122 + - 122 + - 2z = 26 + - 122

Combine like terms: 122 + - 122 = 0

0 + - 2z = 26 + - 122

-2z = 26 + - 122

Combine like terms: 26 + - 122 = - 96

-2z = - 96