The first one is 50 cm
second is 153 ft
third one is 132 m
sorry if it’s wrong
Sometimes it will, and sometimes it won't.
I reason as follows:
(21 + x) + (30 + 2x) = 51 + 3x has an 'x' term
(42 + x) + (30 - x) = 72 has no 'x' term.
Step 1. Subtract 4y from both sides
5y + 18 - 4y = -3.2
Step 2. Simplify 5y + 1.8 -4y to y + 1.8
y + 1.8 = -3.2
Step 3. Subtract 1.8 from both sides
y = -3.2 - 1.8
Step 4. Simplify -3.2 - 1.8 to -5
y = -5
Your answer is A.
x=5
y= 7.07
.......................................
A whole, is whatever/whatever.
so... he painted 4/5 of the house first..... now the whole house is 5/5, from 4/5 to 5/5 is just 1/5, so 1/5 was left for the next day.
the next day, he painted only 2/3 of what was left, what is 2/3 of 1/5? well is just their product.