If -24=3(1+r), what is the value of 7(1+r) ? Choose 1 answer: (A) -56 (B) -24 (C) -9 (D) -8

Find r: Given the equation -24 = 3(1 + r), we need to find the value of r first. Solve for r by dividing both sides by 3. -24 / 3 = 3(1 + r) / 3 -8 = 1 + rIsolate r: Now, subtract 1 from both sides to isolate r. -8 - 1 = 1 + r - 1 -9 = rSubstitute r: With the value of r found, we can now find the value of 7(1 + r). Substitute -9 for r in 7(1 + r). 7(1 - 9) = 7(-8)Multiply to find value: Now, multiply 7 by -8 to find the value of 7(1 + r). 7 * -8 = -56

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Math Problems

Grade 8

Solve multi-step equations with fractional coefficients

Full solution

Q. If

-24=3(1+r)

, what is the value of

7(1+r)

\newline

Choose

1

answer:

\newline

(A)

-56

\newline

(B)

-24

\newline

(C)

-9

\newline

(D)

-8

Find $r$ : Given the equation $-24 = 3(1 + r)$ , we need to find the value of $r$ first. $\newline$ Solve for $r$ by dividing both sides by $3$ . $\newline$ $-24 / 3 = 3(1 + r) / 3$ $\newline$ $-8 = 1 + r$
Isolate $r$ : Now, subtract $1$ from both sides to isolate $r$ . $\newline$ $-8 - 1 = 1 + r - 1$ $\newline$ $-9 = r$
Substitute $r$ : With the value of $r$ found, we can now find the value of $7(1 + r)$ . Substitute $-9$ for $r$ in $7(1 + r)$ . $7(1 - 9) = 7(-8)$
Multiply to find value: Now, multiply $7$ by $-8$ to find the value of $7(1 + r)$ . $\newline$ $7 \times -8 = -56$