Question

Find the solution of the system of equations:x=4+y, 9x=10y=19

Answer 1

First
Given
9x=10y=19
9x=19
x=19/9
x=2.11
and
10y=19
y=19/10
y=1.9
Now
given again
x=4+y
x=4+1.9 [y=1.9]
x=5.9
and
x=4+y
2.11=4+y
y=2.11-4[x=2.11]
y=-1.89
Ans: x, y= 5.9, 1.89

Answer 2

i'm confused at this

Answer 3

whats the part confused??