Question

1)
1. Find the value of :
(i) 3x + 2y when x = 3 and y = 2
(ii) 5x - 3y when x = 2 and y = 5
(iii) a + 2b - 5c when a = 2, b = 3 and c = 1
in
f
+
-
(v) 3ab + 4bc – 5ca when a = 4, b = 5 and c = 2.
1.
f.​

Answer 1

$(i)3x + 2y \: \: \ :\\\ 3 \times 3 + 2 \times 2 \\ = 9 + 4 \\ = 13$

ii) 5x - 3y

5*2 - 3*5

10-15

= -5

Answer 2

Answer:

3.3+2.2=9+4=13

5.2-3.5=10-15=-5

2+2.3-5.1=2+6-5=3

3.4.5+4.5.2-5.2.4=60+40-40=60.

Step-by-step explanation:

. means multiply