Respuesta :
Step-by-step explanation:
[tex]4x - 4x + 4y - 5y = 26 - 30[/tex]
[tex]4y - 5y = 26 - 30[/tex]
[tex] - y = 26 - 30[/tex]
[tex] - y = - 4[/tex]
[tex]y = 4[/tex]
[tex]4x + 5x \times 4 = 30[/tex]
[tex]4x = 10[/tex]
[tex]x = \frac{5}{2} [/tex]
[tex]y = 4[/tex]
Hope this is correct and helpful
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From the first equation
4x +4y=26
Divide through by 4
x + y=6•5
Make x the subject
x=6•5 -y
Put x=6•5 into the second equation
4(6•5-y) + 5y= 30
26 - 4y + 5y= 30
y =30 - 26
y=4
Put y = 4 in the second equation
4x + 4y = 26
4x + 4(4) = 26
4x + 16 = 26
4x = 26 - 16
4x = 2•5