Answer:
x = -4/45
Step-by-step breakdown:
180x=2(30÷3)+17-5•11+2÷1
We first need to simplify the right side. The initial step involves the parentheses
180x=2(10)+17-5•11+2÷1
Next, we multiply and divide, proceeding from left to right after the equals sign.
180x=20+17-5•11+2÷1
180x=20+17-55+2÷1
180x=20+17-55+2
Next, we add and subtract, moving from left to right in relation to the equals sign.
180x=37-55+2
180x =-18+2
180x = -16
Then divide each side by 180
180x/180 = -16/180
x = -4/45
This equation can be solved with two solutions, corresponding to
and
.
Answer:
81
Step-by-step explanation:
6 divided by 12 equals 3 divided by 6, 6 divided by 3 equals 6 divided by 12, 6 divided by 6 equals 3 divided by 12, and 12 divided by 6 equals 3 divided by 6
we understand that
A fast method for estimating the total of two numbers involves rounding each number and adding the rounded results.
case a) We round to the nearest hundred
so
Round up equals 
Round up equals 
Calculate the estimated sum
case b) We round to the nearest ten
so
Round up equals
Round down equals 
Calculate the estimated sum
