(-1,-4) is where the equations Y=4x and x+y=-5 intersect.
Answer:120.75
Step-by-step explanation:
Multiply
Step 1: 8.50x21
Multiply
Step 2: 2.75x21
Subtract
Step 3 : 178.50 - 57.75
Answer:
3/28
Step-by-step explanation:
1/4*3/7=3/28
3(3x-10)=5(x+10)
9x-30=5x+50
+30 +30
9x = 5x+80
-5x -5x
4x=80
/4 /4
x=20