Question

$\frac{x}{3} + \frac{x}{4 } = 42$

Answer 1

hey mate
X/3+x/4 =42
3x+4x/12= 42
7x =42×12
X= 72
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Answer 2

x/3+x/4
Lcm of 3 and 4 is 12
4+3x/12
7x/12


7x/12=42
7x=42*12
7x= 504
x=504/7
x=72