Do you know. How to solve these?
2 answers:
B, e, and c
this is how you can tell
b: 7/2, both the top and bottom × 3 will get 21/6, 7×3=21, 2×3=6 so they are proportional
e: both 5 and 2 multiply 5: 5×5=25, 2×5=10, so 25/10 is proportional to 5/2
c 4×3=12, 5×3=15
the others are not.
another way to do it is what I call 'diagonal times'. for example;
, you multiply diagonally, 5×11=55, 6×9=54, 55 and 54 are not equal, so they two fractions are not proportional.
try this "diagonal times" on b, c, e, you'll see you get two products that are equal.
this is how you can tell
b: 7/2, both the top and bottom × 3 will get 21/6, 7×3=21, 2×3=6 so they are proportional
e: both 5 and 2 multiply 5: 5×5=25, 2×5=10, so 25/10 is proportional to 5/2
c 4×3=12, 5×3=15
the others are not.
another way to do it is what I call 'diagonal times'. for example;
try this "diagonal times" on b, c, e, you'll see you get two products that are equal.
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