Question

(2a-2c)+(3c-a)-4(a-c) при a=-0,1и c =0,7

Answer 1

2a-2c+3c-a-4a+4c= a(2-1-4)+c(-2+3+4)= -3a+5c=-3*-0.1+5*0.7= 0,3+3,5=3.8

Answer 2

(2а-2с)+(3с-а)-4(а-с)=2а-2с+3с-а-4а+4с=-3а+5с=5с-3а
5*0,7-3*(-0,1)=3,5+0,3=3,8

Answer 3

To evaluate the expression (2a-2c)+(3c-a)-4(a-c) with a = -0.1 and c = 0.7, we substitute the given values into the expression and perform the calculations step by step.

Let's start:

(2a - 2c) + (3c - a) - 4(a - c)

Substitute the values of a and c:

(2(-0.1) - 2(0.7)) + (3(0.7) - (-0.1)) - 4((-0.1) - 0.7)

Now simplify each term:

(-0.2 - 1.4) + (2.1 + 0.1) - 4(-0.8)

-1.6 + 2.2 + 3.2

Combine like terms:

-1.6 + 2.2 + 3.2 = 3.8

Therefore, when a = -0.1 and c = 0.7, the value of the expression (2a - 2c) + (3c - a) - 4(a - c) is 3.8.