Answer:
10
Step-by-step explanation:
4x+8+3x+12=90
x=10
this is the solution hope it's helpful
I don't know what to do but I think it is #1
1.981: One and nine hundred eighty-one thousandths
Answer:
3. 6.40
Explanation:
I have my work at the bottom but to explain you have to divide 30/12, and I got 2.5. That means 30 is 2.5 times bigger than 12. Because we have to find x, we have to divide 7/2.5, to find what is 2.5 times smaller than 7. That’s 2.8. So, x= 2.8