Evaluate the expression for r = –1. –4r + 8 = _____

Write Expression with Given Value: Write the expression –4r + 8 with the given value of r, which is –1. Substitute –1 for r in the expression –4r + 8. –4(–1) + 8Substitute Value in Expression: Evaluate the expression –4(–1) + 8. Multiplying –4 by –1 gives us 4, because the product of two negative numbers is positive. 4 + 8Evaluate Expression: Add 4 and 8 to get the final result. 4 + 8 = 12

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Evaluate the expression for $r = -1$ . $\newline$ $-4r + 8 =$ _____

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Math Problems

Algebra 1

Evaluate variable expressions involving integers

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Q. Evaluate the expression for

r = -1

\newline

-4r + 8 =

_____

Write Expression with Given Value: Write the expression $-4r + 8$ with the given value of $r$ , which is $-1$ . $\newline$ Substitute $-1$ for $r$ in the expression $-4r + 8$ . $\newline$ $-4(-1) + 8$
Substitute Value in Expression: Evaluate the expression $–4(–1) + 8$ . $\newline$ Multiplying $–4$ by $–1$ gives us $4$ , because the product of two negative numbers is positive. $\newline$ $4 + 8$
Evaluate Expression: Add $4$ and $8$ to get the final result. $\newline$ $4 + 8 = 12$