Question

If 2x + 5y =18, x = 2 what is the value of 3x +5y? *

Answer 1

Answer:

20.0

Step-by-step explanation:

2X+5y=18

X=2

3X+5y=?

2×2+5×y=18

4+5y=18

5y=18-4

5y= 14

y=14÷5

y=2.8

3×2+5×2.8=?

6+14.0=20.0Answer

Answer 2

Step-by-step explanation:

2×2+5y=18

4+5y=18

5y=18-4

5y=14

y=14/5

3x+5y=3×2+5×14/5

=6+14=20