Tolong dibantu yhy cepat

Langsung saja ke caranya,

1.
a. 7 + 2 = 9
b. 8 + -4 = 4

2.
a. x+4=9
x = 9-4
x = 5

x+4=-9
x = -9-4
x = -13

b. |x-2|-3=5
|x-2| = 5+3 >> 8
x-2 = 8
x = 8+2
x = 10

x-2 = -8
x = -8+2
x = -6

maaf kalau salah mohon dikoreksi lagi