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3 years ago

30t - 20=70 two step equations

Mathematics

2 answers:

Alenkasestr [34]3 years ago

8 0

Answer:

Hi!

To solve this we can begin by adding 20 to both sides

30t = 90

Next we divide both sides by 30

t = 3

~CoCo

Elza [17]3 years ago

4 0

30t-20=70
+20 +20
____________
90.
30t 90
Divide by 30 on each

T=3

The -20 and +20 cancel out so you just forget about those

The 30t cancels out with the divided by 30 again so it becomes t and 30x3=90

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