Question

simultaneous linear equation in two variable my question is the sum of four times the first number the and the three times the second number is 15 the difference of three times the first number and twice the second number is 7. Find the number...

Answer 1

it may be 5. if u know please say me back

Answer 2

Let the first number be x
Let the second number be y
So, the first equation is :4x+3y=15
The second equation is:3x-2y=7
From the first eqn,x=(15-3y)/4
Putting the value in eqn 2
3x-2y=7
3×(15-3y)/4 -2y =7
45-9y-8y=28
-17y=-17
Y=1
Putting y in the first wen,
4x+3y=15
4x+3=15
4x=15-3
X=12/4
X=3