Answer:
a)7
b) 20
c) 30
Explanation:
a) 17 + 4 = 21
21 ÷ 3 = 7
b) 4 + 1 = 5
5 × 4 = 20
c) 23 - 8 = 15
15 × 2 = 30
a). 7
3x-4=17
3x-4+4=17+4
3x=21
3x/3=21/3
x=7
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