You need to go to school sorry I don’t know I just joined sorry
Solve for the first variable in one of the equations, then substitute the result into the other equation.
3. (1/2, -1,2)
4. (2, -4)
You can get step by step at:
https://www.mathpapa.com/algebra-calculator.html
Answer:$5.95
Step-by-step explanation:
Rational number I believe
The answer would be 2. This is because 28 divided by 10 is 2 and 4/5 and 42 divided by 2 and 4/5 is 15 and 7 times 2 plus 1 is 15.