Simplify the expression and find the value if $x = 2$
$x + 7 + 4 (x - 5)$

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Solution

Given $x + 7 + 4 (x - 5)$
Put $x = 2$
Consider
$x + 7 + 4 (x - 5) 2 + 7 + 4 (2 - 5) 9 + 4 (- 3) 9 - 12 - 3$
Hence, $x + 7 + 4 (x - 5)$ is $- 3$

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Simplify the expressions and find the value if x is equal to 2

(i) x + 7 + 4 (x − 5) (ii) 3 (x + 2) + 5x − 7

(iii) 6x + 5 (x − 2) (iv) 4 (2x −1) + 3x + 11

x

2

x + 7 + 4 (x - 5)

x

2

x + 7 + 4 (x - 5)

3 x (4 x - 5) + 3

x = 3

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