solve the equation 4x+9 -4 = 0 and 2x + 4y = 7, and find the value of x and y
Answers
Answered by
0
Step-by-step explanation:
2x=7-4y
x=7-4y/2
4x+9-4=0
4(7-4y/2)+9-4=0
14-8y+5=0
8y=19
y=19/18
x=7-4(19/18)/2
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Answered by
0
Answer:
x=-5/4 ; y= 19/4 or 4.75
Step-by-step explanation:
By 1st equation we will find the value of x
4x+9-4=0
4x+5=0
4x= 0-5
4x = -5
x= -5/4
By the help of x we will find y
2×-5/4+4y=7
-5/2+4y=7
-5+4y=7×2
-5+4y=14
4y=14+5
4y= 19
y=19/4
y= 4.75
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