Question

check by substituion whether X is equals to minus 6 and Y is equals to minus 3 is a solution of equation 2 (x minus 1) minus 5 Y is equals to 1 or not​

Answer 1

2(X-1)-5Y=1?true? lets find out!

change it to an expression

X = -6 and Y = -3

plug in!

2(-6-1)-5(-3)

PEMDAS!!

124356

1. parentheses

2(-7)-5(-3)

step 2? No need. It's not there!!

now to 3 since there is no exponents.

3. multiply!!!! my favorite!!

-14-(-15)

now move to step 5 and 6!!!!

Here's a novice formula but a easy way to remember it!!!

-14-(-15)? nope!! cant subtract a negative.

-(- Does it look like a plus? fix it!!!!

-(- = +

so now we have -14+15

switch so the bigger number is in front

15-14

Solve!!!!

15-14=1