Photomath is the best for fractions, decimals ect. You could also try a scientific calculator.
Answer:
the answer is -4
Step-by-step explanation:
step 1: -7m<28
step 2: -7m÷ (-7)>28÷(-7)
step 3: m>28÷(-7)
step 4: m>-28÷7
step 5: m>-4
-2x - 147 = 123 + 7x
Add 147 on both sides
-2x = 270 + 7x
Subtract 7x on both sides
-9x = 270
Divide -9x on both sides
X = -30