Question

A + B = 15
B × C = 84
C ÷ 4 = 3
B + D = 18
Solve for D
Hint D ≠ 11​

Answer 1

Step-by-step explanation:

Given ;

C÷ 4= 3

and, B× C= 84.

so, C= 4× 3=12.

B× C= 84.

B= 84/12= 7.

and, B+ D= 18

= D= 18- 7= 11(ans..)

Answer 2

Answer:

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Step-by-step explanation:

A=15-B..................(1)

B=84÷C.................(2)

C=3×4

=>C=12..................(3)

then

B=84÷12

=>B=7..................(4)

A=15-7

=>A=8

thus,

B+D=18

=>D=18-7

=>D=11