Which of the following expressions has a sum of 42/100

Step-by-step explanation:

Verify each expression

case 1) we have

Multiply the first term by 10/10

Remember that

Fractions with the same denominator, you can add the numerators and write the sum over the common denominator

so

therefore

case 2) we have

Multiply the second term by 10/10

Remember that

Fractions with the same denominator, you can add the numerators and write the sum over the common denominator

so

therefore

case 3) we have

Multiply the second term by 10/10

Remember that

Fractions with the same denominator, you can add the numerators and write the sum over the common denominator

so

therefore

case 4) we have

Multiply the first term by 10/10

Remember that

Fractions with the same denominator, you can add the numerators and write the sum over the common denominator

so

so

This expression is the answer

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

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