Evaluate 8p+3q-18 when p=(1)/(2) and q=7.

Substitute Values: Substitute the given values of p and q into the expression. We have p = 1/2 and q = 7. The expression is 8p + 3q - 18. Substitute p and q into the expression: 8(1/2) + 3(7) - 18Perform Multiplication: Perform the multiplication for each term. Calculate 8 times 1/2 and 3 times 7: 8 * (1/2) = 4 3 * 7 = 21 Now the expression is 4 + 21 - 18.Add and Subtract: Add and subtract the numbers. Add 4 and 21, then subtract 18: 4 + 21 = 25 25 - 18 = 7Write Final Answer: Write the final answer. The value of the expression 8p + 3q - 18 when p = 1/2 and q = 7 is 7.

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Evaluate
8p+3q-18 when
p=(1)/(2) and
q=7.

Evaluate $8p+3q-18$ when $p=\frac{1}{2}$ and $q=7$ .

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Math Problems

Algebra 1

Evaluate variable expressions involving rational numbers

Full solution

Q. Evaluate

8p+3q-18

when

p=\frac{1}{2}

and

q=7

Substitute Values: Substitute the given values of $p$ and $q$ into the expression. $\newline$ We have $p = \frac{1}{2}$ and $q = 7$ . The expression is $8p + 3q - 18$ . $\newline$ Substitute $p$ and $q$ into the expression: $\newline$ $8(\frac{1}{2}) + 3(7) - 18$
Perform Multiplication: Perform the multiplication for each term. $\newline$ Calculate $8 \times \frac{1}{2}$ and $3 \times 7$ : $\newline$ $8 \times \left(\frac{1}{2}\right) = 4$ $\newline$ $3 \times 7 = 21$ $\newline$ Now the expression is $4 + 21 - 18$ .
Add and Subtract: Add and subtract the numbers. $\newline$ Add $4$ and $21$ , then subtract $18$ : $\newline$ $4 + 21 = 25$ $\newline$ $25 - 18 = 7$
Write Final Answer: Write the final answer. $\newline$ The value of the expression $8p + 3q - 18$ when $p = \frac{1}{2}$ and $q = 7$ is $7$ .