Solve the following system using substitution. 1/3 x+2y=1 y=2/3 x-4

4x+4y=1, 6x-y=1

x+y=4, x-y=2

x-y=9, x+y=6

Step-by-step explanation:

x equals 27/5

Step-by-step explanation:

just substitute y into the first equation

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

the answer is two. hope this !