7a+7b-3(7a-2b)=

Solution for 7a+7b-3(7a-2b)= equation:

Simplifying
7a + 7b + -3(7a + -2b) = 0
7a + 7b + (7a * -3 + -2b * -3) = 0
7a + 7b + (-21a + 6b) = 0

Reorder the terms:
7a + -21a + 7b + 6b = 0

Combine like terms: 7a + -21a = -14a
-14a + 7b + 6b = 0

Combine like terms: 7b + 6b = 13b
-14a + 13b = 0

Solving
-14a + 13b = 0

Solving for variable 'a'.

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

Add '-13b' to each side of the equation.
-14a + 13b + -13b = 0 + -13b

Combine like terms: 13b + -13b = 0
-14a + 0 = 0 + -13b
-14a = 0 + -13b
Remove the zero:
-14a = -13b

Divide each side by '-14'.
a = 0.9285714286b

Simplifying
a = 0.9285714286b