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Ex 12.3, 7 (i) - Chapter 12 Class 7 Algebraic Expressions
Last updated at March 16, 2023 by Teachoo
Ex 12.3
Ex 12.3, 1
Ex 12.3, 2 Important
Ex 12.3, 3
Ex 12.3, 4
Ex 12.3, 5 Important
Ex 12.3, 6 (i)
Ex 12.3, 6 (ii) Important
Ex 12.3, 6 (iii)
Ex 12.3, 6 (iv) Important
Ex 12.3, 7 (i) Important You are here
Ex 12.3, 7 (ii)
Ex 12.3, 7 (iii) Important
Ex 12.3, 7 (iv)
Ex 12.3, 7 (v) Important
Ex 12.3, 8 (i)
Ex 12.3, 8 (ii) Important
Ex 12.3, 9 Important
Ex 12.3, 10
Transcript
Ex 12.3, 7 Simplify these expressions and find their values if x = 3, a = –1, b = -2 (i) 3x – 5 – x + 9 3x – 5 – x + 9 = x (3 – 1) + (–5 + 9) = x (2) + 4 = 2x + 4 Putting 𝑥 = 3 = 2 (3) + 4 = 6 + 4 = 10
