Math, asked by Katherine123, 5 months ago

Evaluate the following algebraic expressions:
a) 3 − 2
b)if x = 1 , = 7 = 12

Pls Do With Steps and Explanation

Answers

Answered by Ganga0312
0

Answer:

pls mention the variables along with the eqn. I guess some of them are missing

Answered by RITESHMOHAMMAD
0

Khan Academy video wrapper

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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