Question

solve for x and y 4x-y=70 and 5x-2y=80​

Answer 1

Answer:

x=20  y=10

Step-by-step explanation:

4x-y=70                                

4(20)-(10)=70

80-10=70

Answer 2

Step-by-step explanation:

4x-y=70

70y=×÷40

-xy=70÷4=17.5

5y-2y=80

5y=80÷2=x

Xy=80÷5=2

. . x y=3.5