Question

4/5 + 9/10 what is this answer?

Answer 1

4/5=0.8 9/10= .9
0.8+.9=1.7

Answer 2

`\boldsymbol{\sf{(4)/(5)+(9)/(10) } }`

The least common multiple of 5 and 10 is 10. Convert 4/5 and 9/10 to fractions with denominators of 10.

`\boldsymbol{\sf{(4*2)/(5*2)+(9)/(10) \ \ \to \ \ Simplify }}`

`\boldsymbol{\sf{ (8)/(10)+(9)/(10) }}`

Since 8/10 and 9/10 have the same denominator, join their numerators to add them.

`\boldsymbol{ \sf{(8+9)/(10) \ \to \ \ Add }}`

Simplify

`\boldsymbol{\sf{ (17)/(10)= }}\boxed{\boldsymbol{\sf{1(7)/(10) }}}`