can you write an equation by setting an expression equal to itself. would an equation like this be true

2 answers:

8 0

Of course ! An expression is always equal to itself.

But if there's, say, an 'x' in the expression, then such an equation would be true
for x=every possible number. You might say it has an infinite number of solutions ...
which certainly has to be true, because no matter what you do to an expression,
it's still always equal to itself !

tensa zangetsu [6.8K]3 years ago

4 0

Yes it would be as long as it truly equals eachother

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7 0

4 years ago

Read 2 more answers

Idk what to do can anyone help

Leona [35]

Step-by-step explanation:

$\angle PTS\: \&\: \angle QTR$ are vertically opposite angles.

$\therefore \: \angle PTS\: = \: \angle QTR \\ \\ \therefore \: [11(y - 10)] \degree = (4y - 5)\degree \\ \\ \therefore \:11y - 110 = 4y - 5 \\ \\ \therefore \:11y - 4y = 110 - 5\\ \\ \therefore \:7y = 105 \\ \\ \therefore \:y = \frac{105}{5} \\ \\ \huge \red{ \boxed{\therefore \:y = 15}} \\ \\ \therefore \: m\angle PTS\: =[11(y - 10)] \degree \\ = [11(15- 10)] \degree \\ = [11 \times 5] \degree \\ \huge \orange{ \boxed{\therefore \: m\angle PTS\: = 55 \degree}}$