What is the value of x in x+y=-10 and x-y=2
2 answers:
X+Y=-10
X=-Y-10
Answer= X= -Y-10
X-Y=2
Answer X=Y+2
Answer:
x = -4
Step-by-step explanation:
x+y = -10 -------- (1)
x-y = 2 ------- (2)
from (1)
x+y = -10
y = -10-x -------- (3)
substitute (3) into (2)
x-y = 2
x-(-10-x) = 2
x+10+x = 2
2x = 2-10
2x = -8
x = -8/2
x = -4
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