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7/8= 35/40

3/10= 12/40

Step-by-step explanation: You can find the least common denominator by looking at a multiplication table or by multiplying the prime factors of the original denominators:

8 = 2×2×2. 10=2×5

"Cancel" the duplicate from one set or the other. So here one of the 2's is eliminated:

2×2×2×5=40

Then set up a proportion:

7/8 = x/40 Multiply the new denominator by the original numerator, then divide by the original denominator:

40×7=280. 280÷8=35

40×3=120. 120÷10=12

I hope this helps you with this question and all the others like it!

d

step-by-step explanation:

given

y + 3 = - 4(x - 2) ← distribute the parenthesis

y + 3 = - 4x + 8 ( subtract 3 from both sides )

y = - 4x + 5 → d