Please help it’s a test

x=7

Step-by-step explanation:

3(2x+6)=60

2x+6=20

x+3=10

x=7

x =7

Step-by-step explanation:

60/3 =20

20 = 2x +6

14 = 2x

14/2 = x

7 =x

x = 7

CHeck Back

2 x 7 + 6 = 20

20 x 3 = 60

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