Answer:
Step-by-step explanation:
I'm not sure I would cross multiply as my first step.
How about subtracting 7/3 first.
0.5x = 21/4 - 7/3
0.5x = 21*3/(4*3) - 7*4/(3*4)
0.5x = 63 / 12 - 28/12
0.5x = 35/ 12 Now multiply by 2
2*0.5x = 35*2 / 12
x = 70/12
x = 5 10/12 or
x = 5 5/6 or
x = 5.8333333
There might be a slightly easier way of doing this.
Suppose you multiply by 2 to begin with
x + 14/3 = 42/4
x + 14/3 = 21/2
x = 21/2 - 14/3
x = 63/6 - 28/6
x = 35/6
x = 5 5/6
I don't think there is much difference in how you do it. The numbers are just plain ugly.
