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(2x + y = – 4
(x + y = -7
a. Find the first variable and isolate it. Then solve for that variable.
b. Solve for the second variable.
c. Find the numerical value of the first variable.
d. Check your solution.

Respuesta :

wanjaumachira

Answer:

a) y=-4-2x

b) since y=-4-2x equate it to x+y=-7 to be

x-4-2x=-7

x-2x=-7+4

-x=-3

x=3

c)if x=3 then y=-4-2(3)

y=-10

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