7 The system below represents two numbers whose sum is 20 and whose difference is 14.
X + y = 20
x-y=14
2
Solve this system of equations. Remember your solution is an (x, y) pair.
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Luisa sells stuffed animals. she sells her stuffed elephant for $34.90, and the sales tax is 6% of the sale price. about how much is the sales tax on the elephant?

Shannon mary and john earn a weekly allowance ahannon earns the amount that is 2/3 of what john earns mary earns an amount that is 1 2/3 of what johns earns 20 dollars a week who eaens the greatest allowance and who earns the least

Given the equation −4  = 12, solve for x and identify if it is an extraneous solution.