Answer:
a.8x+9 = 6x+19
8x-6x = 9-19
2x = 10
x = 2-10
x = 8
b.9x-11 = 8x+9
9x-8x = 11-9
x = 2
9x-11 = 8x+9
9(2)-11 = 8(2)+9
7 = 25
RI=7
NA=25
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Answer:
a.8x+9 = 6x+19
8x-6x = 9-19
2x = 10
x = 2-10
x = 8
b.9x-11 = 8x+9
9x-8x = 11-9
x = 2
9x-11 = 8x+9
9(2)-11 = 8(2)+9
7 = 25
RI=7
NA=25