英文文字題}equation!要有steps`急!

1)a=4b........................1
a+b=45....................2
Put(1)into(2)
4b+b=45
b=9
a=4b
a=4(9)
a=36



2)Let the one of the consecutive even numbers is A
the next consecutive even numbers is (A+2)

A+(A+2)=46
2A =44
A=11
So the first number is 11
the next number is 11+2=13

1. The value of a is 4 times that of b means a = 4b
their sum is 45 means a + b = 45
=> 4b + b = 45
=> 5b = 45
=> b = 9. Then, a = 4x9 = 36.

2. Let x, x+2 be the two consecutive even numbers.
Then, x + (x+2) = 46
=> 2x = 44
=> x = 22
Therefore the two consecutive even numbers are 22 and 24.

1. a=4b...(α)
a+b=45...(β)
put (α) into (β)
4b+b=45
5b=45
b=9
hence a=4x9=36

c+(c+2)=46
2c+2=46
c+1=23
c=22
hence the two consecutive even numbers are 22 and 24