We are working on solving system of equations by substitution. can you please explain how to get the answer for 5x+y=2
x+y=10​

try symbolab calculator it will give you a step by step explanation

x= -2

y= 12

Step-by-step explanation:

5x + y = 2eqn 1

x + y = 10 eqn 2

from eqn 1

5x + y = 2, u substitute by making 'y' the subject

y = 2 - 5x eqn 3

put eqn 3 into eqn 2

x + y = 10

x + 2 - 5x = 10

x - 5x = 10 - 2

-4x = 8

x = 8 / -4

x = -2

put x = -2 into eqn 1

5x + y = 2

5(-2) + y = 2

-10 + y = 2

y = 2 + 10

y = 12

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8