Question

[ ]+[ ]=16
+ +
[ ]-[ ]=12
= =
26 16

Answer 1

Step-by-step explanation:

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Refer To The Attachment..

$\fbox \bold{a = 7}\\\fbox \bold{b = 9} \\ \fbox\bold{c = 19} \\ \fbox\bold{d = 7}$

Answer 2

Answer:

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LET US GIVE EACH NUMBER A VARIABLE ..

THEREFORE ,

ACCORDING TO THE QUESTION ;

A + B = 16 ---(1)

C - D = 12 ---(2)

A + C = 26 ----(3)

B + D = 16 ---(4)

EQUATING EQ (1) AND EQ (4)

A + B = B + D

A = D ----(5)

SUBSTITUTING EQ (5) IN EQ (3)

D + C = 26

C = 26 - D ----(6)

SUBSTITUTING EQ (6) IN EQ (2)

26 - D - D = 12

26 - 2D = 12

26 - 12 = 2D

14 = 2D

D = 7 ----(7)

A = D = 7 ---(8)

SUBSTITUTING EQ (8) IN EQ (1)

7 + B = 16

B = 9

SUNSTITUTING EQ (7) IN EQ (4)

C - 7 = 12

C = 19

THEREFORE

A = 7

B = 9

C = 19

D = 7

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