-6.3(2y+5)-2.1(4y-6)=

Solution for -6.3(2y+5)-2.1(4y-6)= equation:

Simplifying
-6.3(2y + 5) + -2.1(4y + -6) = 0

Reorder the terms:
-6.3(5 + 2y) + -2.1(4y + -6) = 0
(5 * -6.3 + 2y * -6.3) + -2.1(4y + -6) = 0
(-31.5 + -12.6y) + -2.1(4y + -6) = 0

Reorder the terms:
-31.5 + -12.6y + -2.1(-6 + 4y) = 0
-31.5 + -12.6y + (-6 * -2.1 + 4y * -2.1) = 0
-31.5 + -12.6y + (12.6 + -8.4y) = 0

Reorder the terms:
-31.5 + 12.6 + -12.6y + -8.4y = 0

Combine like terms: -31.5 + 12.6 = -18.9
-18.9 + -12.6y + -8.4y = 0

Combine like terms: -12.6y + -8.4y = -21y
-18.9 + -21y = 0

Solving
-18.9 + -21y = 0

Solving for variable 'y'.

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

Add '18.9' to each side of the equation.
-18.9 + 18.9 + -21y = 0 + 18.9

Combine like terms: -18.9 + 18.9 = 0.0
0.0 + -21y = 0 + 18.9
-21y = 0 + 18.9

Combine like terms: 0 + 18.9 = 18.9
-21y = 18.9

Divide each side by '-21'.
y = -0.9

Simplifying
y = -0.9