Question

Solve the equation: 21 − 3(x − 7) = x + 20​

Answer 1

Answer:

21-3x+21=x+20

42-3x=x+20

x+3x=42-20

4x=22

x=21/4=5.5

x=5.5

Answer 2

$\huge\purple{\mid{\fbox{\tt{ANSWER}}\mid}}$

21 – 3 (x – 7) = x + 20

☁⇒ 21 – 3x + 21 = x + 20 ⇒ 42 – 3x = x + 20

☁⇒ 42 – 20 = x + 3x ⇒ 4x = 22

☁⇒ x = 22/4 = 11/2 = 5.1/2

☁∴ x = 5.1/2