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18+X+6+=15
24+X+15
X= -24 +15
X= -9
B. X-(-27)-(-10)=22
X+27+10=22
X+37=22
X= -37+22
X= -15
a) 18 + x = 15-6
18+x = 9
x = 9 - 18
x = -9
b) x -(-27)-(-10) = 22
x+27+10=22
x+37= 22
x= 22-37
x= -15
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