Question

Show that Cu +3) + (-a)=11 + [3+4-9)​

Answer 1

Answer:

Step-by-step explanation:

) x − 4 = 3, x =−1, 7,−7

x-4=3⇒x-4+4=3+4⇒x=7

Hence, x = 7 is the solution of the equation.

(2) 9m = 81, m = 3, 9, −3

9m=81Dividing both sides by 9⇒

9m

9

=

81

9

⇒m=9

Hence, m = 9 is the solution of the equation.

(3) 2a + 4 = 0, a = 2, −2, 1

2a+4=0⇒2a+4-4=-4⇒2a=-4Dividing both sides by 2⇒

2a

2

=

-4

2

⇒a=-2

Hence, a = −2 is the solution of the equation.

(4) 3 − y = 4, y = −1, 1, 2

3-y=4⇒3-y+y=4+y⇒3=4+y⇒3-4=4+y-4⇒-1=y

Hence, y = −1 is the solution of the equation.

Hope it helps

:)

Answer 2

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