Question

find value of unknown variables in equations x-10=1/2(X+5)​

Answer 1

Answer:

25

Step-by-step explanation:

Equation though formed is

2(x-10)=x+5

2x-20=x+5

2x-x=5+20

x=25

Answer 2

$\huge{\boxed{\sf{x = 18}}}\\(unknown \: variable = x) \\ x - 10 = \frac{1}{2} (x + 5) \\ = > x - 10 = \frac{1}{2} \times (x) + \frac{1}{2} \times (5) \\ = > x - 10 = \frac{1}{2}x + \frac{5}{2} \\ = > x = \frac{1}{2}x + \frac{5}{2} + 10 \\ = > x - \frac{1}{2} x = \frac{5}{2} + 10 \\ = > \frac{(2 \times x) - x}{2} = \frac{5 + (2 \times 10)}{2} \\ = > \frac{2x - x}{2} = \frac{5 + 20}{2} \\ = > \frac{x}{2} = \frac{25}{2} \\ (after \: cross \: multiplication) \\ = > x \times 2 = 25 \times 2 \\ = > 2x = 50 \\ = > x = \frac{50}{2} \\ = > x = 25 \\ hence \: the \: value \: of \: x \: = 25 \\ hope \: it \: helps$