The larger of two numbers is 4 more than 2 times the smaller.
Let two numbers be x and y
y = 4 + 2 x ---------------- equ 1
If the smaller is subtracted from the larger, the result is 7. Find the two numbers.
y - x = 7 ---------------------- equ 2
Solution:
y = 4 + 2 x ---------------- equ 1
y - x = 7 ----------- y = x + 7 ---------- equ 2
equ 1 = equ 2
x + 7 = 4 + 2x
7 - 4 = 2 x - x
x = 3
put x = 3 in equ 2 , we have :
y = x + 7 --------- equ 2
y = 3 + 7 = 10
CONCLUSION : x= 3 , y = 10