Question

plz tell this answer then i will mark you as brilliant and full answer means solution also say correctly plz send ​

Answer 1

Answer:

1 a=43

2 a=21

simple

.

Step-by-step explanation:

....

Answer 2

Step-by-step explanation:

question 4(a)

I. compare on both sides we will get a=43

or

43 + 28 = 28 + a

43 + 28 - 28 = a

43 = a

Similarly for

ii.) (49 + a) + 92 = 92 + (21 + 49)

49 + a + 92 = 92 + 21 + 49

a + 141 = 162

a = 162 - 141

a = 21 and

question 4(b)

the consecutive even numbers that begins with 42 are

42 , 44, 46, 48 ,50

and their sum is

42 + 44 + 46 + 48 + 50 = 230 ans