a) 2 * x = -28 /2
x = -14
spr. 2*-14=-28
b)-20 * x = 4 / -20
x = -⁴/₂₀
spr. : -20* -⁴/₂₀=4
c) x * -3 = -18 / -3
x= 6
spr. : 6*-3=-18
d) 64 / x = -16 /*x
64=-16x /-16
x=-4
spr. : -4*-16=64
e) -36 / x = -9 /*x
-36=-9x / -9
x=4
spr. : -9*4=-36
f) x / -3 = 45 /*-3
x=-105
spr. : -105/-3=45
2)
a)-8 / x = 4 /*x
-8=4x /4
x=-2
b)10 / x = -2 /*x
10=-2x / -2
x=-5
c) x / -25 = 4 / *-25
x=-100
d) -4 * x = -8 / -4
x=2
e) x * -12 = -36 /-12
x=3
f) x / -2 = -18 /*-2
x=36
