(13 votes, average: 4.15 out of 5)Find out the numbers in the boxes
| A | + | B | = | 8 |
| + | + | |||
| C | – | D | = | 6 |
| || | || | |||
| 13 | 8 |
Check your answer:-
Top Left Box
Bottom Left Box
Bottom Right Box
Answer With Explanation
Answer:
| 3.5 | + | 4.5 | = | 8 |
| + | + | |||
| 9.5 | – | 3.5 | = | 6 |
| || | || | |||
| 13 | 8 |
Explanation:
We can make four equations
A+B = 8
C-D = 6
A+C = 13
B+D = 8
now we have four variables with four equations so it should be easy to solve. let’s solve these four equations
if we add the four equations
A+B+C-D+A+C+B+D = 8 + 6 + 13 + 8
2(A+B) + 2C = 35
2C = 35 – 2*8 —- by replacing A+B
2C = 35 – 16 = 19
C = 9.5
from 2nd Equation C – D = 6
D = C – 6
D = 9.5 – 6
D = 3.5
from 3rd equation
A+C = 13
A = 13 – C
A = 13 – 9.5
A = 3.5
from 4th equation
B + D = 8
B = 8 – D
B = 8 – 3.5
B = 4.5
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3.5, 4.5, 9.5, 3.5