1. subtract
1.7 -0.8 =
tenths =
tenths -
tenths =
-0.8

1.7  -  0.8   =  0.9

The given arithmetic expression is:

1.7  -  0.8

Convert 1.7 to a fraction

1.7  =  17/10

Convert 0.8 to a fraction

0.8   =  8/10

Therefore, 1.7  -  0.8 can be expressed as:

17/10  -  8/10   =  9/10

Convert 9/10 back to decimal

9/10  =  0.9

Therefore, 1.7  -  0.8   =  0.9

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1.7 - .8= 0.9 is the answer

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse

hdjd

step-by-step explanation: