Question

Simplify the expression and find the value if x is equal to 2.

a) x+7+4(x-5)

b) 6x+5(x-2)
Please Answer ​

Answer 1

Answer:

x=2

a) x+7+4(x-5)

= 2+7+4(2-5)

= 9 + 4(-3)

= 9-12

= -3

b) 6x+5(x-2)

= 6*2+5(2-2)

= 12+5*0

= 12+0

= 12

Answer 2

Answer:

a) –3

b) 12

Step-by-step explanation:

a)

$x + 7 + 4(x - 5) = \\ x + 7 + 4x - 20 = \\ 2x + 4x + 7 - 20 = \\ 5x - 13 = \\ ( 5 \times 2) - 13(putting \: x = 2) \\ 10 - 13 = \\ - 3$

b)

$6x + 5(x - 2) = \\ 6x + 5x - 10 = \\ 11x - 10 = \\ (11 \times 2) - 10(putting \: x = 2) \\ \\ 22 - 10 = 12$