Question

?+?=8
?+?=6
?+?=13
?+?=8​

Answer 1

Answer:

the answer is as follows...

4+4=8

3+3=6

8+5=13

4+4or

-16+8=8

Answer 2

?+?=8 ; ?+?=6 ; ?+?=13 ; ?+?=8 ⇒ ​a = 3.5,  b = 4.5,  c = 9.5,  d = 3.5.

Explanation:

Let us assume a + b = 8 ⇒   a = 8 - b  -----(1)

b + d = 8  ⇒  d = 8 - b, so here we understand that a = d ----(2)

a + c = 13 ⇒  a = 13 - c -----(3)

c - d = 6  ⇒  d = c - 6 -----(4)

Substitute a = d  in equation 4.

c - 6 = 13 - c ⇒ 2c = 19 ⇒ c = 9.5

Finally substitute all the values in the equations, we get a = 3.5,  b = 4.5,  c = 9.5,  d = 3.5.

To know more:

_+_=8 _+_=13 _-_=6 _+_=8 - Brainly.in

https://brainly.in/question/1077249

+? =8+ +? - ? =6= =13 8

https://brainly.in/question/10691807