x − y = 0 = difference
x + y = 4 = sum
Can be solved by the sum and difference rule (most of the time without pen and paper)
x=(sum+difference)/2=0+4/2=2
y=(sum-difference)/2=(4-0)/2=2
Answer:
it would be 10
Step-by-step explanation:
Answer:
78r²s
Step-by-step explanation:
well you add 49 and 42 and 28 and subtract 41 bc they have the same symbols afterwards, and you get that