/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q75. Solve the equation.聽4.2x+6.4=40... [FREE SOLUTION] | 91影视

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Chapter 1: Q75. (page 32)

Solve the equation.

4.2x+6.4=40

Short Answer

Expert verified

The solution is x=8.

Step by step solution

01

Step 1- Consider the equation.

Consider the equation 4.2x+6.4=40.

Subtract 40 from both sides of the equation.

02

Step 2- Step description.

4.2x+6.4=404.2x+6.4鈭�40=0

03

Step 3- Step description.

Simplify the equation as follows:

4.2x+6.4鈭�40=04.2x鈭�33.6=04.2x=33.6

Divide both sides of the equation by 4.2.

4.2x=33.6x=33.64.2x=8

Therefore, the solution is x=8.

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