Substitution into Algebraic Expressions

In algebraAlgebra is a branch of mathematics that substitutes letters for numbers. Algebra is about finding the unknown or putting real-life variables into equations and then solving them. More, substitution means replacing letters with numbers. The operation sign is important when carrying out the substitution.

Example 3.3.1:

If a = 2, b = -5, c = 10, d = 3

Evaluate:

i. \( \scriptsize a \: + \: b \: + \: c \)
ii. \( \scriptsize c \: \div \: b \)
iii. \( \scriptsize a \: \times\: d \)
iv. \( \frac{d \: \times \: c}{a} \)
v. \( \frac{2b \: \times \: c}{10} \)

Solution

i. \( \scriptsize a \: + \: b \: + \: c \)

From the question the values given are a = 2, b = -5,