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a) x + 7 = 10
b) x - 1 = 6
c) 3x + 6 =9
d) 5 = 3 + 7 x
e) 1/2 x = 11
f) 4/9 x = 1/3
g) 1/3 x + 1 =5
h) 4 - x = 1,3​