Of equations:
twice a number plus three times a second number is negative one. the first number plus four times the second number is
two.

The first number is -2 and the second number is 1

see the procedure

Step-by-step explanation:

The complete question is

Translate to a system equation

Twice a number plus three times a second number is negative one. The first number plus four times the second number is two.

Call the first number m and the second number n

Let

m ----> the first number

n ----> the second number

we know that

----> equation A

----> ----> equation B

Solve the system by substitution

Substitute equation B in equation A

solve for n

Find the value of m

---->

therefore

The first number is -2 and the second number is 1

a) justify

step-by-step explanation:

justifying is just part of everyday life. justify kind of means proof so i think the answer is a) justify.