Answer:
m = 5
Step-by-step explanation:
-9 - m = -4 -2m
-m = -4 +9 - 2m
-m = 5 -2m
2m - m = 5
Its 3
В. 18
72/4=18
where are the questions ??!
x=1, y=4
x+y=5 - (1)
y=3x + 1 (2)
Sub (2) into (1)
x + (3x +1)=5
4x=5-1
x=4 ÷4
=1
Sub x=1 into (2)
y=3(1)+1
= 4
