# Ex 12.2, 4 (b) - Chapter 12 Class 7 Algebraic Expressions

Last updated at Sept. 6, 2021 by Teachoo

Last updated at Sept. 6, 2021 by Teachoo

Transcript

Ex 12.2, 4 (b) What should be subtracted from 2a + 8b + 10 to get – 3a + 7b + 16? (2a + 8b + 10) − Expression = (−3a + 7b + 16) (2a + 8b + 10) − (−3a + 7b + 16) = Expression Expression = (2a + 8b + 10) − (–3a + 7b + 16) Putting like terms below like terms and subtracting Answer is 5a + b – 6

Ex 12.2

Ex 12.2, 1 (i)

Ex 12.2, 1 (ii)

Ex 12.2, 1 (iii)

Ex 12.2, 1 (iv)

Ex 12.2, 1 (v)

Ex 12.2, 1 (vi)

Ex 12.2, 2 (i)

Ex 12.2, 2 (ii)

Ex 12.2, 2 (iii)

Ex 12.2, 2 (iv)

Ex 12.2, 2 (v)

Ex 12.2, 2 (vi)

Ex 12.2, 2 (vii)

Ex 12.2, 2 (viii)

Ex 12.2, 2 (ix)

Ex 12.2, 2 (x)

Ex 12.2, 3 (i) Important

Ex 12.2, 3 (ii)

Ex 12.2, 3 (iii)

Ex 12.2, 3 (iv)

Ex 12.2, 3 (v)

Ex 12.2, 3 (vi)

Ex 12.2, 3 (vii)

Ex 12.2, 3 (viii)

Ex 12.2, 4 (a) Important

Ex 12.2, 4 (b) You are here

Ex 12.2, 5 Important

Ex 12.2, 6 (a)

Ex 12.2, 6 (b)

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