Hello from MrBillDoesMath!
Answer:
-6.9
Discussion:
1.3n - 0.03 = -9 => multiply both sides by 100
130n - 3 = -900 =>
130n = -900 +3 = -897 => add 3 to both sides
n = -897/130 =>
n = - (69 * 13)/ (10*13) =>
n = - 69/10 = - 6.9
Thank you,
MrB
The answer would be 7.5, since 6/9=2/3 and 5/7.5=2/3, then the sides are equal ratios.
22+n=11
subreact 22 from both sides
n=11
