Question

The value of expression 2a+2b for a=0 ,b=(-1) is 3 true or false​

Answer 1

Answer:

Given

a= 0 , b= (-1)

2a+2b

= 2×0 + 2× -1

= 0 -2

= -2

Answer 2

$2a + 2b \\ a = 0 \\ b = - 1$

$2a + 2b = 3 \\ 2(0) + 2( - 1) = 3 \\ 0 - 2 = 3 \\ - 2 \not = 3$

It is false❌