Question

PLEA HELP ME WORTH ALOT OF POINTS

Answer 1

Answer:

• option (c) = -19 + x = -21

Step by step explanation:

Question : A number added to -19 is -21

Solution ↓

First of all to make equation

Equation means LHS = RHS

For eg we take :-

50 - 20 = 10 + 20

30 = 30

Therefore, LHS = RHS

According to the question :

• Which number would we add in -19 to get -21 and we get LHS = RHS

Make an equation

-19 + x = -21

x = -21 + 19

x = -2

Add -2 in the variable of x

Variable means any unknown value we used in maths. For eg :- x,y,z,a,b,c,p,q,r etc.

-19 + (-2) = -21

-19 - 2 = -21

-21 = -21

Therefore, LHS = RHS.