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3 years ago

5

What is 19-3x=21+x and how do i show my work

2 answers:

Murljashka [212]3 years ago

6 0

19-3x=21+x
Add 3x to both sides.
19-3x+3x=21=x+3x
19=21+4x
Subtract 21 from both sides.
19-21=21+4x-21
-2=4x
Divide both sides by 4.
-1/2=x

Hope this hleped!

irga5000 [103]3 years ago

4 0

Subtract 19 from both sides
-3x=2+x

Subtract x from both sides
-4x=2

Divide both sides by -4
x=-1/2

Final answer: x=-1/2

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Step-by-step explanation:

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2 years ago

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2 years ago

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marin [14]

$\\ {\large{\textsf{\textbf{\underline{\underline{ Question \: :}}}}}} \\$

Factorise ;

x² + 7x+6

$\qquad\rule{120pt}{2pt}$

$\\ {\large{\textsf{\textbf{\underline{\underline{ Solution \: :}}}}}} \\$

$\\ \sf \implies \: {x}^{2} + 7x+6 \\$

$\\ \sf \implies \: {x}^{2} + 6x + x+6 \\$

$\\ \sf \implies \: x(x + 6) +1 (x+6) \\$

$\\ \sf \implies \: (x + 6) (x+1) \\$

$\\ \sf \implies \: x + 6= 0 \:\:\:\: and\:\:\:\: x+1=0 \\$

$\\ \sf \implies \: x= 0 -6\:\:\:\: and\:\:\:\: x=0-1 \\$

$\\ \sf \implies \: x= -6\:\:\:\: and\:\:\:\: x=-1 \\$

$\\\sf\implies\;{\underline{\boxed {\bf{ \:\:x=-6\:\: }}} }\red\bigstar \;\; \;\; \;{\underline{\boxed {\bf{ \:\:x=-1\:\: }}} }\red\bigstar \\$

$\\\qquad\rule{120pt}{2pt}\\$

5 0

1 year ago

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