Question

GIVEn that R=4x+9y find x when y=1 and R=1

Answer 1

Step-by-step explanation:

1=4x+9×1

1 =4x+9

4x+9-1=0

4x=-8

x=-8/4

x=-2

Answer 2

Step-by-step explanation:

R=4x+9y

1 = 4x + 9(1)

1= 4x +9

1-9= 4x

-8= 4x

-8÷ -4= x ( i am not sure from here..)

2=×