Answer:
a + 5b
Step-by-step explanation:
Distributive property:
a*(b + c) = a*b + a*c
3*(a + b). In this multiply each term with 3 and in -2(a- b), multiply each term with (-2).
3*(a +b) - 2*(a - b) = 3*a + 3*b + (-2)*a + (-2)*(-b)
= 3a + 3b - 2a + 2b
= 3a - 2a + 3b + 2b {Combine like terms}
= a + 5b
Like terms have same variable with same power. Here, 3a and (-2a) are like terms. So, combine the coefficients of the like terms
3a + (-2a) = a.
