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2 years ago

9x+7=7×-5 please show work

Mathematics

2 answers:

Maurinko [17]2 years ago

6 0

9x+7=7x-5

-7x+5=0

2x+12=0

2x=-12

divide both side by 2

x=-6

ankoles [38]2 years ago

5 0

x = -6 It would equal that because 7 would turn into a negative and minus then everything leads to -6

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3 years ago

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kherson [118]

Answer:

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Step-by-step explanation:

Let the value of a number 'a' be = 8/15

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$\mathrm{Remove\:parentheses}:\quad \left(a\right)=a$

$=\frac{8}{15}-\frac{-2}{3}$

$\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{-a}{b}=-\frac{a}{b}$

$=\frac{8}{15}-\left(-\frac{2}{3}\right)$

$\mathrm{Apply\:rule}\:-\left(-a\right)=a$

$=\frac{8}{15}+\frac{2}{3}$

$\mathrm{Since\:the\:denominators\:are\:equal,\:combine\:the\:fractions}:\quad \frac{a}{c}\pm \frac{b}{c}=\frac{a\pm \:b}{c}$

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$=\frac{6}{5}$

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$\frac{8}{15}-\left(\frac{-2}{3}\right)=\frac{6}{5}$

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3 years ago

-15-x=-22<br>What is the answer for this problem

Lelu [443]

Answer:

$x = 7$

Step-by-step explanation:

$-15-x=-22 \\ -15-x + 22 = 0 \\ 7 - x = 0 \\ 7 = x \\ x = 7$

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