Evaluate 7-5p+3q when p=1 and q=7.

Substitute Values: Substitute the given values of p and q into the expression. We have the expression 7 - 5p + 3q, and we are given that p = 1 and q = 7. Let's substitute these values into the expression. Calculation: 7 - 5(1) + 3(7)Perform Multiplication: Perform the multiplication in the expression. Before adding or subtracting, we need to multiply the numbers. Calculation: 7 - 5 + 21Add and Subtract: Perform the addition and subtraction in the expression. Now we add and subtract the numbers in the expression from left to right. Calculation: 7 - 5 is 2, and then adding 21 gives us 2 + 21.Final Calculation: Complete the calculation to find the final value. Adding the results from the previous step, we get the final value of the expression. Calculation: 2 + 21 = 23

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Evaluate $\newline$ $7-5p+3q$ when $\newline$ $p=1$ and $\newline$ $q=7.$

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Algebra 1

Evaluate variable expressions involving rational numbers

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Q. Evaluate

\newline

7-5p+3q

when

\newline

p=1

and

\newline

q=7.

Substitute Values: Substitute the given values of $p$ and $q$ into the expression. $\newline$ We have the expression $7 - 5p + 3q$ , and we are given that $p = 1$ and $q = 7$ . Let's substitute these values into the expression. $\newline$ Calculation: $7 - 5(1) + 3(7)$
Perform Multiplication: Perform the multiplication in the expression. $\newline$ Before adding or subtracting, we need to multiply the numbers. $\newline$ Calculation: $7 - 5 + 21$
Add and Subtract: Perform the addition and subtraction in the expression. $\newline$ Now we add and subtract the numbers in the expression from left to right. $\newline$ Calculation: $7 - 5$ is $2$ , and then adding $21$ gives us $2 + 21$ .
Final Calculation: Complete the calculation to find the final value. $\newline$ Adding the results from the previous step, we get the final value of the expression. $\newline$ Calculation: $2 + 21 = 23$