Find the sum of the following algebraic expressions :
`3a - 4b + 5c , 2a + 3b - 6c , - 5a + 8b + 7c `

Add the following algebraic expressions : 2a - 3b + 4c , -3a + 2b - 5c , 7a - c and 3b + 6c

Add the expressions : 3a - 2b + 5c and 4a + 7b - 9c

Find the value of each of the following algebraic expressions. ab- 3b + 7c, where a = 5, b = 7, c = 4

State the number of terms in each of the following algebraic expressions : 7xxa +b-:3-c+5

Add : a - 3b + 3, 2a + 5 - 3c, 6c - 15 + 6b

Write down the algebraic expressions whose terms are : 3a, -4b, 7c

Write the number of terms in each of the following algebraic expressions : 5xxa+3b-:c+(5ab-3)/(7)

Write the number of terms and also list out the terms in each of the following algebraic expressions. (2a) (-a) +(3b) b- (5c)c+(2a)a-(2b)(-b)

Add : 3b - 7c + 10, 5c - 2b - 15, 15 + 12c + b

Add the following expressions using horizontal method : 2a + 3b +4c and 3a+ 4b + 2c