-2.1(z+.9)=2.1(z+1.6)

Solution for -2.1(z+.9)=2.1(z+1.6) equation:

Simplifying
-2.1(z + 0.9) = 2.1(z + 1.6)

Reorder the terms:
-2.1(0.9 + z) = 2.1(z + 1.6)
(0.9 * -2.1 + z * -2.1) = 2.1(z + 1.6)
(-1.89 + -2.1z) = 2.1(z + 1.6)

Reorder the terms:
-1.89 + -2.1z = 2.1(1.6 + z)
-1.89 + -2.1z = (1.6 * 2.1 + z * 2.1)
-1.89 + -2.1z = (3.36 + 2.1z)

Solving
-1.89 + -2.1z = 3.36 + 2.1z

Solving for variable 'z'.

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

Add '-2.1z' to each side of the equation.
-1.89 + -2.1z + -2.1z = 3.36 + 2.1z + -2.1z

Combine like terms: -2.1z + -2.1z = -4.2z
-1.89 + -4.2z = 3.36 + 2.1z + -2.1z

Combine like terms: 2.1z + -2.1z = 0.0
-1.89 + -4.2z = 3.36 + 0.0
-1.89 + -4.2z = 3.36

Add '1.89' to each side of the equation.
-1.89 + 1.89 + -4.2z = 3.36 + 1.89

Combine like terms: -1.89 + 1.89 = 0.00
0.00 + -4.2z = 3.36 + 1.89
-4.2z = 3.36 + 1.89

Combine like terms: 3.36 + 1.89 = 5.25
-4.2z = 5.25

Divide each side by '-4.2'.
z = -1.25

Simplifying
z = -1.25