Question

Решите уравнение и сделаете проверку
-6+х=-2
У+7=-13
Х+11=-4

Answer 1

x=-2-(-6)=4
y=-13-7=-20
x=-4-11=-15

Answer 2

-6+х=-2
х=-2+6
х=4                   проверка  -6+4=-2
                                           -2=-2.
у+7=-13
у=-13-7
у=-20                проверка   -20+7=-13
                                           -13=-13.
х+11=-4
х=-4-11
х=-15               проверка   -15+11=-4
                                           -4=-4.