Question

A. Solve the equations using the trial and error method. a. 7x= 21 b. 6-X=2 1​

Answer 1

$\huge{ \green{ \underbrace{ \overbrace{ \mathfrak{ \purple{answer::}}}}}}$

(a) 7x = 21

==> Let x be 1

==> 7 × 1 = 7

LHS ≠ RHS

___________________________

==> Let x be 2

==> 7 × 2 = 14

LHS ≠ RHS

___________________________

==> Let x be 3

==> 7 × 3 = 21

LHS = RHS

• Therefore, x = 3.

_____________________

(b) 6 - x = 2

==> Let x be 1

==> 6 - 1 = 5

LHS ≠ RHS

___________________________

==> Let x be 2

==> 6 - 2 = 4

LHS ≠ RHS

___________________________

==> Let x be 3

==> 6 - 3 = 3

LHS ≠ RHS

___________________________

==> Let x be 4

==> 6 - 4 = 2

LHS = RHS

• Therefore, x is 4

-------------------------------

Hope it helps..♪

-------------------------------