Question

Help this one is very confusing

Answer 1

The Answer is 6.

Explanation:

12x = 72

12 x 6 = 72

X = 6 because 6 can go into 72 12 times

Answer 2

x = 6

Explanation:

following the working through

substitute y = - x + 2 into the other equation

5x - 7y = 58

5x - 7(- x + 2) = 58 ← distribute parenthesis by - 7

5x + 7x - 14 = 58

12x - 14 = 58 ( add 14 to both sides )

12x = 72 ( divide both sides by 12 )

x =
`(72)/(12)` = 6

substitute x = 6 into y = - x + 2

y = - 6 + 2 = - 4