Verified answer

a)x=12-5= 7

b)y=3-9= -6

c)x=15-12= 3

d)y= -4-5 = -9

e)x= 8/2 = 4

f)x= -12/3 = -4

g)x= 10-7 = 3

h)x= 90/5 = 18

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a) x+5=12, x = 12 – 5 = 7

b) y+9=3, y = 3 – 9 = -6

c) x-12=15, x = 15+12 = 27

d) y+5=-4, y = -4-5 = -9

e) 2x=8, x = 8/2 = 4

f) 3x=-12, x = -12/3 = -4

g) 3x=10, x = 10/3

h) 5x=90, x = 90/5 = 18