Y = 3/2 t - 5/2 ; where t = 3
Substitute t by its value. the nearness of 3/2 to t denotes multiplication.
y = (3/2 *3) - 5/2
3 is a whole number. it is 3/1 in fraction form.
In multiplying fractions, simply multiply the numerator and the denominator.
y = (3*3 / 2*1) - 5/2
y = 9/2 - 5/2
Subtracting fractions: We can only subtract or add fractions if they all have the same common denominator. Since both fractions have 2 as denominator, we can proceed to subtracting its numerators.
y = (9-5)/2 *subtract numerators and place over the common denominator
y = 4/2 * simplify the fraction.
y = 2/1 or 2
Answer:
( 4, 9 ) is our solution in an ordered pair, as you could also say x = 4, and y = 9
Step-by-step explanation:
So we have the following system of equations at hand ( given directly below ), and want to make it such that each equation is multiplied by a value that makes a common variable, say x, have opposite values of coefficients such that they cancel each other out when the two equations are added, enabling you to solve for the value of the other variable, in this case variable y.
- Multiply this top equation by -5, so the coefficient of variable x becomes - 5, opposite to the respective x coefficient in the second equation.
- Adding the two equations we receive the simplified equation 21y = 189. y = 189 / 21 = 9. If y = 9, x should = - 23 + 3y = - 23 + 3 
9 = 4. To get this value of x simply isolate the value of x in the first equation given to us, and substitute the known value of y. We have our solution in the form ( 4, 9 ), where x = 4 and y = 9.
Box of 50+ Box of 50 = 47$ Box of 100 = 44.95.
That means the box of 100 is the better deal
HOPE THIS HELPED :D
