simplify: 9-2.5 ÷ 5× 0.3+1
Answers
Answer:
Step-by-step explanation:
9−2.5÷5×0.3+1
Expand
5
2.5
by multiplying both numerator and the denominator by 10.
9−
50
25
×0.3+1
Reduce the fraction
50
25
to lowest terms by extracting and canceling out 25.
9−
2
1
×0.3+1
Convert decimal number 0.3 to fraction
10
3
.
9−
2
1
×(
10
3
)+1
Multiply
2
1
times
10
3
by multiplying numerator times numerator and denominator times denominator.
9−
2×10
1×3
+1
Do the multiplications in the fraction
2×10
1×3
.
9−
20
3
+1
Convert 9 to fraction
20
180
.
20
180
−
20
3
+1
Since
20
180
and
20
3
have the same denominator, subtract them by subtracting their numerators.
20
180−3
+1
Subtract 3 from 180 to get 177.
20
177
+1
Convert 1 to fraction
20
20
.
20
177
+
20
20
Since
20
177
and
20
20
have the same denominator, add them by adding their numerators.
20
177+20
Add 177 and 20 to get 197.
20
197
Factor
5⋅2
2
197
=9
20
17
=9.85
Answer:
=9-2.5÷5×0.3+1
=6.5÷2.5
=2.6