Question

6(21+30х)+2(21-15х)=630​

Answer 1

Ответ:

3 2/25

6(21+30х)+2(21-15х)=630

126+180х+42-30х=630

150х=630-42-126

150х=462

Х=462/150=77/25=3 2/25

Answer 2

Let's solve the equation step by step.

Starting with the given equation:

6(21 + 30x) + 2(21 - 15x) = 630

First, we simplify the equation by applying the distributive property:

(6 * 21) + (6 * 30x) + (2 * 21) - (2 * 15x) = 630

126 + 180x + 42 - 30x = 630

Combine like terms:

(180x - 30x) + (126 + 42) = 630

150x + 168 = 630

Now, isolate the term with the variable on one side of the equation:

150x = 630 - 168

150x = 462

Finally, solve for x by dividing both sides of the equation by 150:

x = 462 / 150

x = 3.08

So the solution to the equation is x = 3.08.