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zepelin [54]
1 year ago
15

PLEA HELP ME WORTH ALOT OF POINTS

Mathematics
1 answer:
Harlamova29_29 [7]1 year ago
6 0
<h2>Answer:</h2>

  • option (c) = -19 + x = -21

<h2>Step by step explanation:</h2>

<u>Question</u> : A number added to -19 is -21

<h3><u>Solution</u> ↓</h3>

First of all to make equation

Equation means LHS = RHS

For eg we take :-

50 - 20 = 10 + 20

30 = 30

Therefore, LHS = RHS

<h3>According to the question :</h3>

  • 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.

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