Answer:
r=1
Step-by-step explanation:
-4 r -10r + -5= -19
-4r + (-10r) + -5=-19
-14r+ -5 = -19
-14r + -5 +5= -19+5
-14r= -14
r=1
Answer:
48
Step-by-step explanation:
7*7= 49-1=48
Go to a math calculator and type this in then press graph and it will give you your answer
-2x+y=5
Multiply everything by-1
2x-y=-5
