In Middle School math, it means to find out what number ' x ' must be in order for the equation to be a true statement. In middle school, it can only be one number.
Let x be the no. of<span> laptop computers make that day
</span><span>20 more laptops computers than desktop computers
so no. of desktop computers = x-20
</span><span>5% of the laptop computers and 7% of the desktop computers
</span>= 0.05x + 0.07(x-20)
= 0.05x + 0.07x - 1.4
= 0.12x - 1.4
which equal to 16
so 0.12x-1.4 = 16
0.12x = 17.4
x=145
so the company builds 145 laptop computers that day
150 divided by 25 equals 6. 6 times 3 equals 18. This means that you will spend $18 on gas each week.