Question

4. Solve: 4x - 6 = 50
5. Using distributive property: solve 45x110.
6. The sum of five times a number and 11 is 66.
7. If a = -25, b = 10 cm and c = -10, verify that:
(i) a + (b + c) = (a + b) +C
(ii) a x (b + c) = a b + axc
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Answer 1

4. Answer

• 4x - 6 = 50
• 4x = 56
• x = 56/4 = 14
• Value of x is 14

Answer 2

Step-by-step explanation:

4) 4x-6=50

4x=50+6

x=56/4

x=14

5) 45x110

45x(100+10)

45x100+45x10

4500+450

4950

6) let the number be x

according to question;

5x+11=66

5x=66-11

5x=55

x=55/5

x=11

7) (i) a+(b+c) =(a+b) +c

-25+(10+{-10}) = (-25+10) +(-10)

( -25) = (-25)

(ii) -25x(10+{-10}) = -25x10 + -25x-10

-25x0 = -250+250

0 = 0