Question

.Q10 If in the equation x + 3y = 10, the value of y is 4, then the value of x will be

(a) -2
(b) 2
(c) 4
(d) 5​

Answer 1

Answer:

(a) -2

Step-by-step explanation:

X+3 y=10

x + 3 (4) = 10

x + 12=10

X = 10-12

x = -2.

(a)-2 correct answer

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Answer 2

Answer:

$\large \sf{ \underline{ \underline{★Question}}}$

If in the equation x + 3y = 10, the value of y is 4, then the value of x will be

ⓐ -2

ⓑ 2

ⓒ 4

ⓓ 5

$\large \sf{ \underline{ \underline{★Answer}}}$

$\large \sf{ \underline{{Given :}}}$

$\large\sf \: x + 3y = 10$

&

$\large \sf \: y = 4$

$\large \sf{ \underline{{To \: find :}}}$

Value of x

$\large \sf{ \underline{{Solⁿ :}}}$

$\large \sf \implies x + 3y = 10$

$\large \sf \implies x + 3(4) = 10$

$\large \sf \implies x + 12 = 10$

$\large \sf \implies x = 10 - 12$

$\large \sf \implies x = - 2$

Hence, ⓐ -2 is the value of x.

$\large \sf{ \underline{{Verifying \: solution : }}}$

$\large \sf \: L.H.S$

$\large \sf = - 2 + 3(4)$

$\large \sf = - 2 + 12$

$\large \sf = 10$

$\large \sf = R.H.S$

$\large \sf \: L.H.S = R.H.S$

Hence, verified.

$\large \sf \: Hope\: it \: helps...$

$\huge{ \underline{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: }}$