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MAVERICK [17]
3 years ago
13

Simplify the expression

Mathematics
2 answers:
MaRussiya [10]3 years ago
5 0
11) 7 + -10+(4(5+-3)) = 7+-10+8=5

12) (12 +-10)+3x+-1(2x+4x), 12+-10x+3x+-2x+-4x = 12+-13x
makvit [3.9K]3 years ago
5 0

11. According to the Order of Operations, you start with the inner brackets and work outward. Then, finally, you do the sum left to right.

... 7 + (-10) +(4(5 -3))

... = 7 + (-10) +4(2)

... = 7 + (-10) + 8

... = -3 + 8

... = 5

12. (12 -10x) +3x -(2x +4x)

... = (12 -10x) +3x -6x . . . . . . combine terms inside parentheses

... = 12 - 10x + 3x - 6x . . . . . terms inside the left parentheses cannot be combined

... = 12 -7x -6x . . . . . . . . . . . here, we're combining terms left to right. Of course like terms can be added in any order you may desire, as long as you pay attention to signs. It is sometimes convenient to add all the positve terms, add all the negative terms, then find the sum of those. -10x +3x -6x = 3x -(10x +6x) = 3x -16x = -13x.

... = 12 -13x

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Answer:

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3 years ago
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marking brainlist. please help What is the first inverse operation for the following problem? 3x+4=12
Strike441 [17]

Answer:

3x + 4 = 12 :- x = 8 / 3

Step-by-step explanation:

3x + 4 = 12

Move all terms not containing x to the right side of the equation.

Subtract 4 from both sides of the equation.

3x = 12 - 4

Subtract 4 from 12.

3x = 8

Divide each term by 3 and simplify.

Divide each term in 3x = 8 by 3.

3x / 3 = 8 / 3

Cancel the common factor of 3.

Divide x by 1.

x = 8 / 3

The result can be shown in multiple forms.

Exact Form:

x = 8 / 3

Decimal Form:

x = 2.6

Mixed Number Form:

x = 2 2/3

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sasho [114]
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