Question

Find x.
I want the answer with steps.​

Answer 1

Answer:

straight angle=180

7x+20+3x=180

10x+20=180

10x=160

x=16

then 7x+20=132

3x=3(16)=48

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Answer 2

$\huge \text{Question - }$

Find x .

$\huge \text{Answer - }$

We know that the sum of linear pair is is 180 degree .

hence ,

${\sf{:\implies (7x + 20) + (3x)= 180 }}$

${\sf{:\implies 7x + 20 + 3x= 180 }}$

${\sf{:\implies 10x + 20 = 180 }}$

${\sf{:\implies 10x = 180 - 20}}$

${\sf{:\implies 10x = 160}}$

${\sf{:\implies x = \dfrac{160}{10} }}$

${\sf{:\implies x = \blue{16}}}$

Hence the value of x is 16

now by putting the value of x

${\sf{:\implies 7x + 20 }}$

${\sf{:\implies 7 \times 16 + 20 }}$

${\sf{:\implies 112 + 20 }}$

${\sf{:\implies \blue{132 \degree }}}$

And

${\sf{:\implies 3x }}$

${\sf{:\implies 3 \times 16}}$

${\sf{:\implies \blue{48 \degree }}}$

$\huge \text{Check - }$

we know that the sum of linear pair are 180 .

${\sf{:\implies 132 + 48 }}$

${\sf{:\implies \green{180 \degree }}}$