FMCC Worksheet 5

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\usepackage c a n c e l \usepackage m u l t i r o w \usepackage h h l i n e

Worksheet Worksheet 5
A4 US

1.

Check the presentation for errors. If you find one, circle it and describe the mistake in words.

\begin{aligned} 5 x - y & = 4 \\ 5 x - (3 x + 4) & = 4 & Substitute y = 3 x - 2 \\ 5 x - 3 x - 4 & = 4 & Distributive property \\ 2 x - 4 & = 4 & Combine like terms \\ 2 x & = 0 & Subtract 4 from both sides \\ x & = 0 & Divide both sides by 2 \end{aligned}

2.

Substitute $n = - 2 m - 3$ into the expression $- 3 m - 2 n + 5$ and simplify the result. Use a complete presentation.

3.

Solve the equation $- 2 a + 3 b - 7 = b$ for when $b = - a + 2 .$ Use a complete presentation.