Question

Solve the simultaneous equations
4
x
+
5
y
=
9
4
x
−
2
y
=
2 Solve the simultaneous equations
4
x
+
5
y
=
9
4
x
−
2
y
=
2

Answer 1

Answer:

4x+5y=9

Suppose x=2

4(2)+5y=9

8+5y=9

5y=9-8

5y=1

Y=1/5

So y=1/5

Put the value of y in equation

4x+5(1/5)=9

In cross multiplication 5is cancel with 5 and wo have only 1 like:

4x+1=9

4x=9-1

x=8/4

x=4

4x-2y=2

Let suppose x=4

4(4)-2y=2

8-2y=2

2y=2+8

2y=10

y=10/2=5

Put the value of y in equation

4x-2(5)=2

4x-10=2

4x=2+10

4x=12

x=12/4=3