CPM Homework Help : CC3MN Problem 9-91

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Home > CC3MN > Chapter 9 > Lesson 9.1.6 > Problem 9-91

9-91.

Solve these equations for $x$ .

$2(x + 3.5) = 16$
Hint (a):
Distribute the $2$ .
Answer (a):
$x = 4.5$

$23 + 5x = 7 + 2.5x$
Hint (b):
Move all variables to one side of the equation and all constants to the other side of the equation.

$3x+4.4=-(6.6+x)$
Step 1 (c):
Remember to distribute the negative sign to the terms inside the parentheses.
$3x+4.4=-6.6-x$
Step 2 (c):
Add $x$ to both sides and subtract $4.4$ from both sides to isolate $x$ .
$4x=-11$
Answer (c):
$x=-2.75$

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