Question

please explain how to solve 1​

Answer 1

Answer:

please mark me brainliest

Step-by-step explanation:

correct option is b. when you need to solve it in 2 variables, you need to mark the given variable as 1 and the second is to be taken 0.

Answer 2

Answer:

1) d option

2) a option

3) 2=36

3 =54

Step-by-step explanation:

3) 2x+3x=90

5x=90

x=90/5

x=18

18multiply by 2 =36

18 mul by 3=54