Equation is 3x + 5 = 11
Exercise 7.1
1. Check if the value given in the bracket is the root of the equation or not.
a) 3x + 9 = 20 (x = 3) b) 7x - 15 = 6 (X= 4)
c) 7y x 9 = 63 (y = 1)
5х
d) 8y = 43 (y = 5)
e) + 4 = 9 (x = 6
f) 3y - 5 = 10 (y = 5)
6
7x
20 = -6 (x = 10)
5
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Answers
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1
Step-by-step explanation:
a,b,d not root
c,f root
e and last lines are not clear. sorry could answer those
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