Here are some equations that contain a variable and a list of values. Think about what each equation means and find a solution in the list of values. If you get stuck, draw a diagram. Be prepared to explain why your solution is correct. On the next screen you will match them with the answers. 1000 – a = 400 %3D 12.6 = b+ 4.1 8c = 8 10e = 1 h+ = 1 7.
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
The equation means that when a is subtracted from the number 1000, then the result is 400 or 400 is left.
Solve the equation by first subtracting 400 on both sides and then adding a on both sides of the equation to determine the value of a.
Therefore a=600.
Now substitute the value of a in the equation to check whether the solution is correct or not.
As the equation 400=400 is true, thus the solution is correct.
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