Question

Nishanth has some sandwiches in his bag . If he doubles the number of sandwiches and adds 5 , he will get 19 . How many sandwiches does Nishanth have ?

a) Choose an variable.
b) Write an equation.
c) Solve the equation and verify the solution.

pls answer it it's very difficult. pls answer it in a notebook so I can understand it properly pls answer it ...​

Answer 1

Step-by-step explanation:

$\pmb{ \sf{ \red{ \dag \: Solution : }}}$

a) Choose an variable.

$\sf{Let \: the \: variable \: be \: \pink{x.}}$

b) Write an equation.

$\leadsto{ \sf{x \times 2 + 5 = 19}}$

$\leadsto{ \sf{2x + 5 = 19}}$

Equation : 2x + 5 = 19

c) Solve the equation and verify the solution.

$\implies{ \sf{2x + 5 = 19}}$

$\implies{ \sf{2x = 19 - 5}}$

$\implies{ \sf{2x = 14}}$

$\implies{ \sf{x = \cancel{\dfrac{14}{2}}}}$

$\implies{ \sf{x = \bf{7}}}$

Value of x is 7.

$\pink{ \sf{ \pmb{ \dag{ \: Verification : }}}}$

$\sf{ \longrightarrow \: 2x + 5 = 19}$

$\sf{ \longrightarrow \: 2 \times 7 + 5 = 19}$

$\sf{ \longrightarrow \: 14 + 5 = 19}$

$\sf{ \longrightarrow \: 19 = 19}$

$\sf{ \longrightarrow \: L. H. S = R. H. S}$

Hence, Verified!!

Answer 2

Step-by-step explanation:

a.) Ans:- Let the variable be x

b.) Ans:- x × 2 + 5 = 19

2x + 5 = 19

c.) Ans:- 2x + 5 = 19

2x = 19 - 5

2x = 14

x = 14/2

x = 7

Verification:-

. 2x + 5 = 19

2 × 7 + 5 = 19

14 + 5 = 19

19 = 19

LHS = RHS