Question

how can we calculate two variables with one equation???​

Answer 1

Answer:

2-1+2÷7

Step-by-step explanation:

so your answer is came

Answer 2

Step-by-step explanation:

5(2 - ½y) + 3y = 9

10 – (5/2)y + 3y = 9

10 – (5/2)y + (6/2)y = 9 (If you don't understand this step, learn how to add fractions. This is often, but not always, necessary for this method.)

10 + ½y = 9

½y = -1

y = -2