Answer:
180
Step-by-step explanation:
80 + 100 = 180
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X/5=3 multiply both sides by 5
x=15
Answer:
Step-by-step explanation:
12x-20=6(x-20)-9x
Opening bracket
12x - 20 = 6x - 120 - 9x
Collecting like terms
12x - 6x + 9x = -120 + 20
15x = -100
Dividing by 15
15x/15 = -100/15
x = -20/3
x = - 6 2/3
Start with 7-4=3
Then 3x3=9
Then 18+9=27
Answer 27
So my take on this
15 + 3 -2(2 - 1)
15 + 3 -2(1)
15 +3 -2
18 - 2 = 16