I NEED HELP! 7th GRADE MATH!!

Subtraction should be done first. Always follow SADMEP when answering equations.

Step-by-step explanation:

The student followed PEMDAS not SADMEP to solve the equation which is wrong.

Already answered

So um when this happens you will divided what number is by x or y or whatever it is to 15 and 3 in this case after that you have x+2=5

And now we invert this so the + becomes a - meaning after you do x-2 which we wont know we WILL know from 2-5 which is 3

there fore x=3

2

step-by-step explanation:

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.