Evaluate the following algebraic expressions:
a) 3 − 2
b)if x = 1 , = 7 = 12
Pls Do With Steps and Explanation
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Answer:
pls mention the variables along with the eqn. I guess some of them are missing
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Let's study another example.
Evaluate \dfrac13a-1-\dfrac12b
3
1
a−1−
2
1
bstart fraction, 1, divided by, 3, end fraction, a, minus, 1, minus, start fraction, 1, divided by, 2, end fraction, b when a=12a=12a, equals, 12 and b=6b=6b, equals, 6.
\begin{aligned} &\phantom{=}\dfrac13\blueD a-1-\dfrac12\goldD b \\\\ &= \dfrac13 \cdot \blueD {12}-1-\dfrac12 \cdot \goldD 6~~~~~~~~\text{Replace }\blueD{a} \text{ with } \blueD{12}\text{ and } \goldD b \text{ with } \goldD 6\text{.} \\\\ &=4 - 1 - 3 \\\\ &=0 \end{aligned}
=
3
1
a−1−
2
1
b
=
3
1
⋅12−1−
2
1
⋅6 Replace a with 12 and b with 6.
=4−1−3
=0
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