2.6=-5.2(3.4+m)

Solution for 2.6=-5.2(3.4+m) equation:

Simplifying
2.6 = -5.2(3.4 + m)
2.6 = (3.4 * -5.2 + m * -5.2)
2.6 = (-17.68 + -5.2m)

Solving
2.6 = -17.68 + -5.2m

Solving for variable 'm'.

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

Add '5.2m' to each side of the equation.
2.6 + 5.2m = -17.68 + -5.2m + 5.2m

Combine like terms: -5.2m + 5.2m = 0.0
2.6 + 5.2m = -17.68 + 0.0
2.6 + 5.2m = -17.68

Add '-2.6' to each side of the equation.
2.6 + -2.6 + 5.2m = -17.68 + -2.6

Combine like terms: 2.6 + -2.6 = 0.0
0.0 + 5.2m = -17.68 + -2.6
5.2m = -17.68 + -2.6

Combine like terms: -17.68 + -2.6 = -20.28
5.2m = -20.28

Divide each side by '5.2'.
m = -3.9

Simplifying
m = -3.9