Gujarat BoardEnglish MediumSTD 7MATHSSimple Equations1 Mark
MCQ
The equation having $5$ as a solution is:
A
$4x + 1 = 2$
B
$3 - x = 8$
C
$x - 5 = 3$
✓
$3 + x = 8$
✓
Answer
Correct option: D.
$3 + x = 8$
Let us solve the equations:
$a.$ Given equation is $4x + 1 = 2$
$\Rightarrow4\text{x}=2-1$
$\Rightarrow4\text{x}=1$
$\Rightarrow\text{x}=\frac{1}{4}$
$b.$ Given equation is $3 - x = 8$
$\Rightarrow -x = 8 - 3$
$\Rightarrow -x = 5$
$\Rightarrow x = -5$
$c.$ Given equation is $x - 5 = 3$
$\Rightarrow x = 3 + 5$
$\Rightarrow x = 8$
$d.$ Given equation is $3 + x = 8$
$\Rightarrow x = 8 - 3$
$\Rightarrow x = 5$
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