solving variables..

[naisha_grace]

a) 5 (6 - x) + 2.5 ( x + 2) = 25


b) 0.7 (m - 10) = -6


c) 1.8 (2n - 5) = -12.6

 

[Gene]

Distribut them all
a) 30 - 5*x + 2.5*x + 5 = 25
b) 0.7*m - 7 = -6
c) 3.6n - 9 = -12.6
Then gather like terms.