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4 years ago

Solve. 7x − 2 = −23 x =

2 answers:

7 0

7x-2=-23 add 2 to both sides to get 7x by itself
7x=-23+2 now add the right side
7x=-21 now divide both sides by 7
x=-21/7
x=-3

umka21 [38]4 years ago

5 0

7x - 2 = -23          The two is crossed out (-2+2)
    + 2     +2
-------------------

7x =      -21
---         ------
7             7

x    = -3

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3 years ago

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4 years ago

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3 years ago

Betty saves 3 times as much as Ann. Charles save 390 less than Ann.. If Betty saves save 1330 more than Charles. how much does C

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Answer:

Step-by-step explanation:

We let x be Ann's savings.

Betty saves 3 times as much as Ann.

This implies that Betty's savings in terms of x

$= 3x$

Charles save 390 less than Ann.

This implies Charles savings

$= x - 390$

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This implies that when we deduct Charles savings from Betty's we have to get 1330.

Mathematical equation for the problem:

$3x - (x - 390) = 1330$

Expand :

$\implies 3x - x + 390= 1330$

$\implies 2x + 390= 1330$

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$\implies 2x + 390 - 390= 1330 - 390$

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$\implies x=470$

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4 years ago