Question

If x= 7 and y= 3 is the solution of equation ax + ay = 18 and bx+ay= 12 then a+ b=

Answer 1

Answer:

2.7 4

Step-by-step explanation:

ax+ay=18

7a+3a=18

10a=18

a=1.8

bx+ay=12

7b+5.4=12

7b=12-5.4

b=6.6/7

b=0.94

a+b=1.8+0.94

=2.74