Решите уравнение с проверкой пж 15баллов 1)X+(-5)=2 2) 8+y=-3 3) 14+x=-6 4)-6+X=-2...

Question

Решите уравнение с проверкой пж 15баллов
1)X+(-5)=2
2) 8+y=-3
3) 14+x=-6
4)-6+X=-2
5)y+7=-13
6)X+11=-4

Answer 1

Х + (-5) = 2
х= 2+5
х=7
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7+(-5) =2
7-5=2
2=2

8+у=-3
у= -3 -8= -3 + (-8)
у= -11
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8+(-11) =-3
-(11 - 8)=-3
-3=-3

14+х=-6
х=-6 -14= (-6) + (-14)
х= -20
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14 + (-20) =-6
-(20 -14) = -6
-6=-6

-6 +х =-2
х= -2 +6 = 6-2
х=4
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-6 + 4 = -2
-(6-4) = -2
-2=-2

у+7=-13
у=-13 -7 = (-13) + (-7)
у=-20
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(-20) +7 = -13
- (20-7)= -13
-13=-13

х+11=-4
х= -4 -11 = (-4) + (-11)
х=-15
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(-15) +11 = -4
-(15-11)=-4
-4=-4