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Chapter 2: Q. 357 (page 264)

2.5. Solve Equations with Fractions or Decimals

2.1k+3=7.2

Short Answer

Expert verified

Thesolutionforthegivenequationisk=2

Step by step solution

01

Step 1. Given information

The given equation is2.1k+3=7.2

We have to solve the given equation.

02

Step 2. Explanation

Solve:2.1k+3=7.2鈬�10脳(2.1k+3)=10脳(7.2)(MuliplybuLCD,10)鈬�10脳(2.1k)+10脳(3)=10脳(7.2)(Distribute)鈬�21k+30=72(Multiply)鈬�21k+30鈭�30=72鈭�30(Add30tobothsides)鈬�21k=42(Simplify)鈬�21k21=4221(Dividebothsideby36)鈬�k=2(Simplify)Thesolutionforthegivenequationisk=2

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Most popular questions from this chapter

In the following exercise, solve each equation using the Subtraction and Addition Properties of Equality.
p+2.4=鈭�9.3

In the following exercise, solve each equation using the Subtraction and Addition Properties of Equality.

y+39=鈭�83

In the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution.

鈭�809=15y

In the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution.

7p=63

Translateandsolve:Thedifferenceof4xand3xis14.
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