Charlie's weight is nine kilograms greater than his brother's. Together they weigh 99 kilograms. Let x represent the weight of t he little brother. Which equation can be used to determine what each one weighs?
2 answers:
Answer:
Charlie's weight is represented by the expression x+9. Since the equation needs their weights totaled, you must add x and x+9 and set it equal to 99 to get *2x + 9 = 99*
The equation that can be used to determine what each one weighs is:
x + (x + 9) = 99.
Let us now solve it.
x + x +9 = 99
2x + 9 = 99
2x = 99 - 9
2x = 90
x = 90/2
x = 45
Little brother's weight is 45 kg.
Charles' weight will be 45 + 9 = 54 kg
Adding these two weights will give 99kg
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