Simplify expressions to solve equations

When solving equations, we should simplify the expressions that make up the left and right sides before applying any properties of equality. Often, that involves removing parentheses and/or combining like terms.
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Questions #: 3
Time: 5 minutes
Pass Score: 80.0%
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Solve the following equation

3(k + 1) -5k = 0

POINTS (1)

Correct Answer

Explanation

Solve the following equation

8a - 2(a - 7) = 68

a =

POINTS (1)

Correct Answer

Explanation

Solve the following equation

3x - 15 = 4x + 36

x =

POINTS (1)

Correct Answer

Explanation

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sin cos tan
sin-1 cos-1 tan-1 π e
xy x3 x2 ex 10x
y√x 3√x √x ln log
( ) 1/x % n!
7 8 9 + MS
4 5 6 M+
1 2 3 × M-
0 . EXP ÷ MR
± RND C = MC

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