Solve the simultaneous equations 3
x
+
4
y
=
30
3
x
−
y
=
15

The solution for given system of equations is: x = 6 and y = 3

Or

(6,3)

Step-by-step explanation:

Given equations are:

There are three methods to solve simultaneous equations

We will use the elimination method as the coefficients of x in both equations are already same

Subtracting equation 2 from equation 1

Putting y = 3 in equation 2

Hence,

The solution for given system of equations is: x = 6 and y = 3

Or

(6,3)

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons