Question

I don't understand how to do this. It's very difficult and I was wondering if you can help me please.

Answer 1

Explanation:

This is an exercise in order of operations (PEMDAS)

step 1 is just rearranging the equation (numbers to fill in the blanks are in BOLD):

(-8/21 x 42/4 x 1.75) ÷ (-7)

step 2 rearrange again to put the fractions together:

(-8/21 x 42/4) x (1.75 ÷ (-7))

step 3 multiply the fractions together (-8/21 x 42/4) = -336/84 = -4

(-4) x (-0.25)

last step: final answer

(-4) x (-0/25) = 1