Question

c) If 4x - 3 = 21, what is the value of (3x - 5)?​

Answer 1

Step-by-step explanation:

4x-3=21

=>4x=24

=>x=6

3x-5=3×6-5=18-5=13

Answer 2

$\huge\tt\colorbox{lightblue}{Answer}$

$4x - 3 = 21 \\ 4x = 21 + 3 \\ 4x = 24 \\ x = \frac{24}{4} \\ x = 6 \\ substitute \: the \: value \: of \: x\\ (3x - 5) \\ 3(6) - 5 \\ 18 - 5 \\ 13$