3a+5b-7a+2b=

Solution for 3a+5b-7a+2b= equation:

Simplifying
3a + 5b + -7a + 2b = 0

Reorder the terms:
3a + -7a + 5b + 2b = 0

Combine like terms: 3a + -7a = -4a
-4a + 5b + 2b = 0

Combine like terms: 5b + 2b = 7b
-4a + 7b = 0

Solving
-4a + 7b = 0

Solving for variable 'a'.

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

Add '-7b' to each side of the equation.
-4a + 7b + -7b = 0 + -7b

Combine like terms: 7b + -7b = 0
-4a + 0 = 0 + -7b
-4a = 0 + -7b
Remove the zero:
-4a = -7b

Divide each side by '-4'.
a = 1.75b

Simplifying
a = 1.75b