Question

Evaluate the expression for the values of j.

j
1/1/1
13/
4
35
2j+5
4
5

Answer 1

The evaluation of the expression 2j + 3/5 for j is

• 1⅗
• 2⅕
• 4⅒

How to evaluate expressions?

2j + 3/5

When j = ½

2j + 3/5

2(½) + 3/5

= 1 + 3/5

= 1⅗

When j = 4/5

2j + 3/5

Substitute j = 4/5 into the expression

= 2(4/5) + 3/5

= 8/5 + 3/5

= (8+3)/5

= 11/5

= 2⅕

When j = 1¾

2j + 3/5

=2(1¾) + 3/5

= 2(7/4) + 3/5

= 14/4 + 3/5

= 7/2 + 3/5

Find the lowest common multiple

= (35+6)/10

= 41/10

= 4⅒