Answer:
one solution with a y value of 5
Step-by-step explanation:
/| x+y-4 = 0| x-y-6 = 0
We try to solve the equation: x+y-4 = 0
x+y-4 = 0 // - x-4
y = -(x-4)
y = 4-x
We insert the solution into one of the initial equations of our system of equations
We get a system of equations:
/| x+x-6-4 = 0| y = 4-x
2*x-10 = 0 // + 10
2*x = 10 // : 2
x = 10/2
x = 5
We insert the solution into one of the initial equations of our system of equations
For y = 4-x:
y = 4-5
y = -1
We get a system of equations:
/| y = -1| x = 5
Answer:
-1/2
Step-by-step explanation:
Answer:
1520
Step-by-step explanation:
Pela pergunta acima, sabemos que:
1 parcela mensal = 304
5 parcelas mensais = x
Multiplicação cruzada
x = 5 prestações mensais × 304/1 prestações mensais
= 1520
Portanto, o valor que ele pagou pelo dispositivo é 1520
