Question

2(4а+3в)-3(2а+6в)якщо а= 1 1/4 в =-0,36

Answer 1

To evaluate the expression 2(4a + 3b) - 3(2a + 6b) with the given values of a = 1 1/4 and b = -0.36, we substitute these values into the expression and perform the calculations.

Let's substitute the values:

a = 1 1/4 = 1.25 b = -0.36

Now we can evaluate the expression:

2(4a + 3b) - 3(2a + 6b) = 2(4(1.25) + 3(-0.36)) - 3(2(1.25) + 6(-0.36))

Simplifying inside the parentheses:

= 2(5 + (-1.08)) - 3(2.5 + (-2.16)) = 2(3.92) - 3(0.34)

Now multiply:

= 7.84 - 1.02 = 6.82

Therefore, the value of the expression 2(4a + 3b) - 3(2a + 6b) with a = 1 1/4 and b = -0.36 is 6.82.