The value of the expression 30 - 3x3

21

Step-by-step explanation:

30-(3*3)

Follow the rule:

PEMDAS

parenthesis, exponents, multiplication, division, addition, subtraction.

Since we know that multiplication comes first before subtraction in PEMDAS, we do multiplication first. We can also put PARENTHESES around (3*3) because the multiplication comes first.

So:

30-(6)=

21!

Hope this helps, have a good day. c;

could u provide us some answer choices or hmm idk maybe a table for us to anser with ? ?

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.